问题
单项选择题
蛋鸡育雏期的光照原则是（）
A.光照时间保持不变
B.光照时间只能逐渐减少
C.光照时间只能增加
D.光照时间越长越好
答案
参考答案：B
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蛋鸡育雏期的光照原则是（）
A.光照时间保持不变
B.光照时间只能逐渐减少
C.光照时间只能增加
D.光照时间越长越好
参考答案：B
| 用方框中的句子补全对话，有一项是多余的。 | |
| A: Have you seen Jim the last two days? B: l He's gone to Japan to see his grandfather. A: 2 B: Of course! He lived there before he came here. A: 3 B: Yes, I've just received a letter from him. A: 4 B: He said he had a good time there and would stay for another month. Then he was going to return to England. He also wanted me to give his best wishes to you. A: Oh, well. 5
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