【单选题】The author most probably believes that the antigen-antibody theory of immunological reaction______.
B.
was accepted without evidence
D.
is a partial explanation
【单选题】出站方向区间内有瞭望不良的地形或有()(站名表由铁路局公布),禁止跟踪出站调车,
【单选题】出站方向区间内有()的地形或有长大上坡道禁止跟踪出站调车。
【简答题】给左边的答句选择正确的问句。 ( ) 1. I'm very well. ( ) 2. By train. ( ) 3. At six in the morning. ( ) 4. A king or a queen. ( ) 5. No, you may not. ( ) 6. Yes, it is. A. When do you arrive ...
【单选题】The word 'they' in the passage refers to
【判断题】在这些综合性服务中,食、住、行具有相对的 稳定性,其经济收人是有限度的.而旅游购 物在旅游需求中的弹性较大。
【单选题】The best choice for the title of the passage would be ______.
A.
The Thirties in Art. Reaction and Rebellion
B.
America in the Thirties: A Changing Time
C.
Thomas Hart Benton and Regionalism
D.
American Art. Appeal and Diversity
【单选题】It was difficult to guess what her _____ to the news would be. [ ]