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46. _A_ the calculation is right scientists can never be sure that they have included all variables and modeled them accurately. [variable n. 變項，變量；model vt. 建模]
A Even if B As far as C If only D So long as
even if 即使，即便； so long as （后面加句子時）只要。
47. My train arrives in New York at eight o'clock tonight. The plane I would like to take from there _B_ by then.
A would leave B will have left C has left D had left
將來完成時：will have + 動詞過去分詞。
49. Harry was _A_ by a bee when he was collecting the honey.
A stung B stuck C bitten D scratched
sting v. （蜜蜂）叮，蟄； bite v. （蚊子等）咬； scratch vt. 抓傷，劃破（通常指貓抓人）。
once bitten, twice shy. 一朝被蛇咬，十年怕井繩。
50. The thief tried to open the locked door but _B_.
A in no way B in vain C without effect D at a loss
in vain 徒勞，白費工夫； But很少與介詞without聯(lián)用； at a loss 不知所措。
52. _B_ seeing the damage he had done, the child felt ashamed.
A By B On C At D For
on后面加動詞ing形式表示“在…之后”這個時間概念。
54. Research findings show we spend about two hours dreaming every night, no matter what we _C_ during the day.
A should have done B would have done C may have done D must have done
should have + 動詞過去分詞，表示本應(yīng)該做； may have + 動詞過去分詞，表示可能做過；
與過去事實相反的虛擬語氣主句謂語動詞的表達(dá)形式可能用到：would have + 動詞過去分詞。
must have + 動詞過去分詞，表示對過去行為進(jìn)行肯定推測。表示一定做過；
can't have + 動詞過去分詞，表示對過去行為進(jìn)行否定推測，表示不可能做過。
56. This crop does not do well in soils[各種土壤] _B_ the one for which it has been specially developed.
A outside B other than C beyond D rather than
outside prep. 在…外邊； rather than 而不是（肯定前者，否定后者）。
beyond prep. 超出…的范圍； beyond his wildest dreams 超出他最狂野的夢想。
other than 不同于，而非，當(dāng)它與否定詞no或not出現(xiàn)在同一個句子中時表示“除…之外”。
66. In no country _A_ Britain, it has been said, can on experience four seasons in the course of a single day.
A other than B more than C better than D rather than
63. My father seemed to be in no _A_ to look at my school report.
A mood B emotion C attitude D feeling
be in no mood to do/doing sth. 沒有情緒（心情）做什么事情。
67. I'm sorry I can't see you immediately; but if you'd like to take a seat, I'll be with you _B_. [in a moment 馬上，立即（它作為時間狀語時一定與將來時態(tài)搭配）= in an instant.]
A for a moment B in a moment C for the moment D at the moment
68. The trumpet player was certainly loud. But I wasn't bothered by his loudness _D_ by his lack of talent. [trumpet 小號]
A than B more than C as D so much as
當(dāng)否定詞not與so much as出現(xiàn)在同一句子中時，它們的含義是：與其說…不如說…
70. Our journey was slow because the train stopped _D_ at different villages.
A unceasingly B gradually C continuously D continually
unceasingly adv. 不停止地，不休止地； gradually adv. 逐漸地，逐步地；= step by step.
continuously adv. 連續(xù)不斷地； continually adv. 時斷時續(xù)地。
46. _A_ the calculation is right scientists can never be sure that they have included all variables and modeled them accurately. [variable n. 變項，變量；model vt. 建模]
A Even if B As far as C If only D So long as
even if 即使，即便； so long as （后面加句子時）只要。
47. My train arrives in New York at eight o'clock tonight. The plane I would like to take from there _B_ by then.
A would leave B will have left C has left D had left
將來完成時：will have + 動詞過去分詞。
49. Harry was _A_ by a bee when he was collecting the honey.
A stung B stuck C bitten D scratched
sting v. （蜜蜂）叮，蟄； bite v. （蚊子等）咬； scratch vt. 抓傷，劃破（通常指貓抓人）。
once bitten, twice shy. 一朝被蛇咬，十年怕井繩。
50. The thief tried to open the locked door but _B_.
A in no way B in vain C without effect D at a loss
in vain 徒勞，白費工夫； But很少與介詞without聯(lián)用； at a loss 不知所措。
52. _B_ seeing the damage he had done, the child felt ashamed.
A By B On C At D For
on后面加動詞ing形式表示“在…之后”這個時間概念。
54. Research findings show we spend about two hours dreaming every night, no matter what we _C_ during the day.
A should have done B would have done C may have done D must have done
should have + 動詞過去分詞，表示本應(yīng)該做； may have + 動詞過去分詞，表示可能做過；
與過去事實相反的虛擬語氣主句謂語動詞的表達(dá)形式可能用到：would have + 動詞過去分詞。
must have + 動詞過去分詞，表示對過去行為進(jìn)行肯定推測。表示一定做過；
can't have + 動詞過去分詞，表示對過去行為進(jìn)行否定推測，表示不可能做過。
56. This crop does not do well in soils[各種土壤] _B_ the one for which it has been specially developed.
A outside B other than C beyond D rather than
outside prep. 在…外邊； rather than 而不是（肯定前者，否定后者）。
beyond prep. 超出…的范圍； beyond his wildest dreams 超出他最狂野的夢想。
other than 不同于，而非，當(dāng)它與否定詞no或not出現(xiàn)在同一個句子中時表示“除…之外”。
66. In no country _A_ Britain, it has been said, can on experience four seasons in the course of a single day.
A other than B more than C better than D rather than
63. My father seemed to be in no _A_ to look at my school report.
A mood B emotion C attitude D feeling
be in no mood to do/doing sth. 沒有情緒（心情）做什么事情。
67. I'm sorry I can't see you immediately; but if you'd like to take a seat, I'll be with you _B_. [in a moment 馬上，立即（它作為時間狀語時一定與將來時態(tài)搭配）= in an instant.]
A for a moment B in a moment C for the moment D at the moment
68. The trumpet player was certainly loud. But I wasn't bothered by his loudness _D_ by his lack of talent. [trumpet 小號]
A than B more than C as D so much as
當(dāng)否定詞not與so much as出現(xiàn)在同一句子中時，它們的含義是：與其說…不如說…
70. Our journey was slow because the train stopped _D_ at different villages.
A unceasingly B gradually C continuously D continually
unceasingly adv. 不停止地，不休止地； gradually adv. 逐漸地，逐步地；= step by step.
continuously adv. 連續(xù)不斷地； continually adv. 時斷時續(xù)地。