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職稱英語(yǔ)理工類AB級(jí)答疑精選(3)

更新時(shí)間:2015-12-10 11:50:58 來(lái)源:|0 瀏覽0收藏0

問(wèn)題內(nèi)容:

Black holes lead stars to self-destruct (Black holes trigger stars self-destruction ) 3. According to the fourth paragraph, which of the following is NOT true? A No nuclear explosion would be triggered inside(在...里面) the star B The star would be destroyed(毀滅) completely(完全地) C. Much of the star’s matter(物質(zhì)) thrown(扔) by the explosion (爆炸)would be beyond(超過(guò)) the black hole’s reach(范圍) D. The black hole would completely(完全地) devour(吞沒(méi)) the star A 是“沒(méi)有觸發(fā)恒星的核爆炸” 或者是“在恒星里沒(méi)有核爆炸被觸發(fā)” 應(yīng)該也不是正確的。

老師回復(fù):

你好!根據(jù)排除法,A是正確的。  

問(wèn)題內(nèi)容:

Nerve signals may travel through nerve or muscle fibers at speeds as high as two hundred miles per hour.

A) rates
B) impacts
C) ratios
D) pulses

為什么選A而不選D;rate和pulse有何區(qū)別?

老師回復(fù):

rate有速度的含義, 如:a steady rate/穩(wěn)定的速度, 而pulse只有“脈沖, 脈搏”的詞義, 如:The doctor felt her pulse on her wrist. 這位醫(yī)生在她的手腕上號(hào)脈。
因此答案應(yīng)該選擇A。

問(wèn)題內(nèi)容:

Why Humans Walk On Two Legs這一講中第四題答案是B還是D? 4. What was true of the hypothesis of the research? A) Our apelike ancestors were anatomically different but had the same gaits. B) Bipeds with natural selection had an advantage over quadruped. C) Our apelike ancestors could adapt to different climate changes due to genetic variation. D) Bipeds had an advantage over quadrupeds due to changes in the environment.

老師回復(fù):

根據(jù)教材中對(duì)該題的注解來(lái)看(猿人祖先在解剖學(xué)上存在的差異在自然選擇的過(guò)程中決定了遺傳變異, 而環(huán)境的變化使兩足行走的動(dòng)物比四足行走的動(dòng)物更有優(yōu)勢(shì)), D應(yīng)該是答案。教材上提供的答案不正確。 

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