4. “”是“方程
表示双曲线”的
( )
A.充分不必要条件 B. 必要不充分条件
C. 充要条件 D. 既不充分也不必要条件
3.已知是两条不同直线,
是三个不同平面,下列命题中正确的是( )A.
B.
C. D.
2.椭圆的焦点在y轴上,长轴长是短轴长的两倍,则m的值为 ( )
A. B.
C. 2
D.4
1.若复数为纯虚数,则实数的值为
( )
A.
B.0 C.2
D.
或2
10.( ) People may have different opinions about Karen,
but I admire her. ____, she is a great
musician.
A. After all B. As a result
C. In other words D. As usual
[解析]选A after all“毕竟”;as a resuIt“结果是”;in
other words“换句话说”;as usual“像往常”。
9. I shall stay in the hotel aIl day ____ there is
news of the missing c hild.(2002年上海春)
A. in case B. nomatter
C. in any case D. ever since
[解析]选A in case为连词,意为“万一,以防”。
8.( ) All morning as she waited for the medical report
from the doctor, her nervousness ____. (2003
年全国)
A. has grown B. is growing
C. grew D. had grown
[解析]选C 根据all morning和时间状语从句中的
谓语动词,可判断出应用一般过去时。一般过去时可用于
表示过去经常或反复发生的动作。
7.( ) The journey around the world took the old sailor
nine months ____ the sailing time was 226
days. (2004 全国III)
A. of which B. during which
C. ftomwhich D. for which
[解析]选A 根据句意,填空部分为“其中”之意。
6.( ) We'll be shown around the city: schools,
museums and some other places, ____ other
visitors seldom go. (2002 北京市)
A. what B. which
C. where D. when
[解析]选C some other places为先行词,定语从句
中的go为不及物动词,表地点的先行词在定语从句中作
状语。
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