act语法练习题含答案：

　　1. You panic. You scream, though no one can hear you. You think you might become ill. Furthermore, only seconds pass before the static line, which is a rope attached to you and to the floor of the plane, becomes taut and yanks open your chute automatically.

　　A.NO CHANGE

　　B.However,

　　C.Thus,

　　D.Consequently,

　　2. As immigrants, Tran, Maya, and their four children left much behind, including their family restaurant. Nowthey want to run a restaurant in Los Angeles just as they did in Da Nang.

　　A.NO CHANGE

　　B.In conclusion,

　　C.Likewise,

　　D.Instead

　　3. I’ve thought many times of the instinctive way our bodies respond to the beat of music by wanting to get up and dance, or how a parent quiets a crying baby by walking back and forth.

　　A.NO CHANGE

　　B.for example,

　　C.meanwhile

　　D.then

　　4. Such cues may be found in the speaker’s immediate surroundings. Hearing a Venezuelan singer’s latest recording being played on a store’s sound system might prompt a bilingual speaker to use Spanish. Besides, the language of the speaker’s most recent conversation can be the determining factor.

　　A.NO CHANGE

　　B.For this reason,

　　C.Sometimes,

　　D.Instead,

　　5. Today, after many birthdays and New Year’s Days, I now find meaningful the difference I once found confusing. Otherwise, this difference points to significant underlying cultural values.

　　A.NO CHANGE

　　B.Though,

　　C.In fact,

　　D.Then

　　6. Certainly the school board would be justified in prohibiting students from wearing clothing that was unsanitary, revealing, or obscene. The court remained unconvinced, therefore, that wearing jeans would actually impair the learning process of Kevin or his fellow classmates.

　　A.NO CHANGE

　　B.thus,

　　C.moreover,

　　D.however,

　　7. But the author entertained a variety of fanciful ideas, including a belief in the mythical beings known as fairies. Since that belief, he was fooled in 1920 by two schoolgirl cousins.

　　A.NO CHANGE

　　B.Because of

　　C.Concerning

　　D.For

　　8. Many seed savers order endangered plants through a small but growing number of organizations that specialize in rare seeds. By now, the seed-saving gardeners agree to grow the plants and then offer the new seeds to other equally concerned growers.

　　A.NO CHANGE

　　B.In exchange,

　　C.In contrast,

　　D.As proof,

　　9. A third hypothesis asserts that ocean water contains too little oxygen for insects. Similarly, some fly larvae can survive months without oxygen, while other insect species live in very polluted waters with similarly low oxygen levels.

　　A.NO CHANGE

　　B.Therefore,

　　C.Yet,

　　D.So

　　10. Studies indicate a fairly clear link between noise and stress, and experts believe there’s a connection between noise and violence. Therefore, there’s evidence that noise affects not only humans but animals as well.

　　A.NO CHANGE

　　B.Namely,

　　C.On the other hand,

　　D.In addition,

　　11. Because the center of gravity of the paddler rides low in the water, kayaks are stable boats not easily capsized. White-water kayakers are, at last, advised to wear helmets and flotation vests to prevent injury.

　　A.NO CHANGE

　　B.for example,

　　C.therefore,

　　D.nevertheless,

　　12. Occasionally, these scenic expanses come about with no help from humans. Often, for example, they are the lovely outcome of federal, state, and local programs to restore and preserve the natural beauty of the national landscape.

　　A.NO CHANGE

　　B.however,

　　C.in the meantime,

　　D.once in a while

　　13. Those tasks are part of the school’s curriculum, although Wright believed that only a person familiar with every room’s function could design a well-formed house.

　　A.NO CHANGE

　　B.since

　　C.while

　　D.furthermore

　　14. Then the micro lending institution, such as Women’s World Banking, makes a small loan (as little as $50) to, in contrast, an artisan or a food vendor who would not qualify for a loan from a commercial bank.

　　A.NO CHANGE

　　B.for example,

　　C.as a result,

　　D.instead,

　　15. In the fall, as daylight and temperatures decrease, migrating monarchs begin their long journey south. Many monarchs west of the Rocky Mountains migrate to the southern California coast, where they overwinter in eucalyptus groves. Besides, most monarchs, millions of them across the United States and Canada — migrate as many as three thousand miles to Oyamel fir forests near Mexico City.

　　A.NO CHANGE

　　B.However,

　　C.Finally,

　　D.Therefore,

　　16. Scientists are starting to learn more about the monarch’s life cycle. When monarchs that don’t migrate to Mexico live only four to six weeks, the migrating generations live at least eight months.

　　A.NO CHANGE

　　B.If

　　C.While

　　D.So that

　　17. In fact, the human eye loses its sensitivity to color at low levels of illumination, a camera with a very long exposure setting can capture a lunar rainbow’s color.

　　A.NO CHANGE

　　B.Though the

　　C.The

　　D.Consider that the

　　18. Brightly lit stations welcomed the public, many of them were skeptical of traveling underground. It didn’t take long for New Yorkers to adapt, however.

　　A.NO CHANGE

　　B.therefore.

　　C.for instance.

　　D.that is.

　　19. Albert Einstein is often considered the most original scientist of the modern age. Therefore, he acknowledged his reliance on the work of others, such as mathematician Emmy Noether — who herself relied on prior discoveries.

　　A.NO CHANGE

　　B.Even he, though,

　　C.In the meantime, he

　　D.He

　　20. Pei’s first concern as an architect is identifying the spirit of a place and translating that spirit into architectural design. However, Pei’s design for the Rock and Roll Hall of Fame, with its bold use of glass walls and ceilings and multiple tiers connected by escalators that direct the eye upward, appropriately reflects a celebratory and rollicking spirit.

　　A.NO CHANGE

　　B.Still,

　　C.So, when

　　D.Thus,

　　21. One purpose of these positions is to allow the patient to learn how his or her body responds as the horse walks. In other words, trained spotters ensure the patient’s safety.

　　A.NO CHANGE

　　B.For example,

　　C.Of course,

　　D.That is,

　　22. Some bike features have been specifically chosen to prevent theft. Painting all the bikes one color,however, makes them easily identifiable.

　　A.NO CHANGE

　　B.for example,

　　C.therefore,

　　in fact,

　　23. Snowflakes form from tiny water droplets, following a specific process of chemical bonding as they freeze, which results in a sex-sided figure. The rare “triangular” snowflake, similarly, confounded scientists for years because it apparently defied the basic laws of chemistry.

　　A.NO CHANGE

　　B.for example,

　　C.additionally,

　　D.however,

　　24. Tourists and New Yorkers alike regularly fill this theater to its 900-seat capacity. Most are there to attend a performance; a few, for example, are likely to be architecture buffs there to admire the stunning building itself.

　　A.NO CHANGE

　　B.consequently,

　　C.however,

　　D.in fact,

　　25. I couldn’t get much improvement even when I adjusted the focuser. Coincidentally, I switched to a higher-powered eyepiece and tried a trick I’d read about for reviewing faint objects: using averted vision.

　　A.NO CHANGE

　　B.Similarly,

　　C.Besides,

　　D.So,

　　以上练习题答案：1-5： BAACC 6-10：DBBCD 11-15：DBBBB 16-20：CBABD 21-25：CBDCD