) 2. I help my friends when they are in need (需要时). (
A
) 3. I share books with my friends. (
B
) 4. I invite (邀请) my friends to meet my cat.
答案：1. C 2. D 3. A 4. B
(
C
) 1. Where is the Moon at night? A. On the ground. B. In the river. C. In the sky. (
B
) 2. Does the Earth go around the Moon? A. Yes, it does. B. No, it doesn't. C. Yes, it is. (
B
) 3. The word "different" means "___". A. 相同的 B. 不同的 C. 高的
答案：1. C 解析：根据“At night，the Moon is high in the sky.”可知月亮晚上在天空中，选C。 2. B 解析：由“The Earth goes around the Sun.”可知地球绕着太阳转，不是绕着月亮转，所以该一般疑问句的答案是否定的，选B。 3. B 解析：“different”常见释义为“不同的”，根据“The Moon looks different every night.”（月亮每晚看起来都不同）也可推测出该词意思，选B。
