动机由()组成。
A.内驱力和诱因
B.需要和内驱力
C.生理和社会内驱力
D.正诱因和负诱因
参考答案:A
—What about playing football this afternoon, Sam?
—I would rather at home than_____football.lt's too hot outside. [ ]
A. stay; playing
B. stay; play
C. to stay; to play
D. to stay; playing
下列说法不正确的是 [ ]
A.吸热反应可以自发进行
B.所有自发过程都将导致体系的熵值增大
C.有序性越高,熵值就越低
D.对于同种物质,在气态时其熵值最大