1.You should have put the milk in the ice-box; I expect it ______undrinkable by now.

　　A.became B. had become C.has become D. becomes

　　Best Answer:C

　　詳解：答案為C。與by now,so far, tip to now這樣的短語連用時，謂語動詞用現(xiàn)在完成時。

　　2.The tendency to lie is perhaps _________originally by imitations. It grows into a habit, unknown to its possessors.

　　A. taken to B. taken over C.taken in D. taken up

　　Best Answer:D

　　詳解：答案為D。take to表示“喜愛”;take over表示“接管”;take in表示“欺騙”;take up表示“接受，形成”。

　　3. There were no tickets ______ for Friday's performance.

　　A.preferable B. considerable C.possible D. available

　　Best Answer:D

　　詳解：答案為D。詞形辨析和句意搭配題。以"-able"或"-ible"結尾的形容詞表示被動，意為“可…”或“值得…”的意思。preferable指“更可取的，更合意的”;considerable指“可觀的，相當多的.值得考慮的”。possible指“可能的”。

　　4.Don't _______ this news to the public until we give you the go-ahead.

　　A.release B. relieve C.relate D. retain

　　Best Answer:A

　　詳解：答案為A。詞形辨析題。release news指“泄露消息�！逼溆嗖粯嫵纱钆洹�relieve 指“減輕、緩解”。relate指“敘述、連接”;retain指“保留、維持”。

　　5.The actual _______by which coal is extracted is well worth watching.

　　A.process B. procession C.pattern D. conduct

　　Best Answer:A

　　詳解：答案為A。process表示“步驟，程度，制作方法”;procession表示“行進的隊伍”;pattern表示“模式，方式”;conduct表示“行為，方式”。