[单选题]
I looked and looked，and at last I made out two figures moving slowly in the _______.
A、end
B、distance
C、past
D、wild

[单选题]
第一心音到第二心音期间代表（　　）
A、心室舒张期
B、心室收缩期
C、心房收缩期
D、心房舒张期
E、等容收缩期

[单选题]
李密的《陈情表》是一篇（　　）
A、书信
B、小说
C、辞赋
D、奏疏

[单选题]
Who do you think it is that he will have_______ the letter?
A、to post
B、posted
C、post
D、posting

[单选题]
__________艺术流派属于西方现代主义思潮。（　　）
A、古典主义
B、自然主义
C、浪漫主义
D、存在主义

[单选题]
The reason why all the solar energy falling on the earth can’t be utilized is that ______．
A、only a very small part is available
B、the sun is too distant from the earth
C、it takes thousands of years for this energy to be stored up in coal and oil
D、our scientific knowledge is not sufficient