It seems oil________from this pipe for&-考呗网题库移动版

单选题 It seems oil________from this pipe for some time. We'll have to take the machine apart to put it right.

A． leaked
B． is leaking
C． had leaked
D． has been leaking

参考答案D

解析:【答案】D。解析：考查时态。根据seems和for some time判断应使用现在完成进行时。现在完成进行时强调在从过去到现在的时间里。动作或状态一直持续或一直反复出现。句意为“看来，这个管道漏油已有一段时问了，我们将不得不拆卸机器排除故障”。故选D。

单选题 All the passengers________in the accident were sent to the nearby hospital in no time.

A． to find injured
B． finding injured
C． to be found injured
D． found injured

单选题 It was not________she took off her dark glasses________I realized she was a famous actress.

A． when ; that
B． until ; that
C． until ; when
D． when ; then

单选题 "Old and young" are a pair ofopposites.

A． complementary
B． relational
C． converse
D． gradable