C.fell ill; has been ill
D.fell ill; is ill
答案:C 第一空应选一般过去时态与and lay in bed对应,先排除A。另外fall ill不延续,不能与for a week表时间段的状语连用,可排除B。根据句意:我母亲生病卧床已有一周,应用现在完成时态。
11.In that situation, a wage freeze, whether voluntary or imposed by the government, deals with a________of inflation rather than with inflation itself.
A.symbol
B.sign
C.signal
D.symptom
答案:D symptom“症状”。句意:那种情况下,工资冻结,无论是自动还是国家强制进行的,是对付通货膨胀的症状,而不是通货膨胀本身。symbol“象征”;sign“符号,记号”;signal“信号”。
12.Please don't call me at the office________it's really necessary.
A.if
B.unless
C.unless if
D.except
答案:B 句意:请不要给我办公室打电话除非真正有必要。unless“除非”,符合语境。
13.—Let's go Dutch for this supper, OK?
—No,________this time, as a reward for all your help.
A.it's up to you
B.it's my treat
C.let's talk about it
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