第2题: [单项选择]对水稻进行排水时,应排至()。 A. 最适淹水深度的上限 B. 最适淹水深度的下限 C. 最大临时淹水深度 D. 降雨前实际的淹水深度 参考答案:D
第3题: [简答题]part 1Family events
How do people celebrate their birthdays in your country
Are birthdays more important for children than adults
Do you think birthday is a special day for people
How did you celebrate your last birthday
Do birthdays have any special meanings for children 参考答案:
第30题: [简答题]It is probably easier for teachers than for students to appreciate the reasons why learning English seems to become increasingly difficult once the basic structures and patterns of the language have been understood. 参考答案:一旦了解英语的基本结构和句型,再往下学似乎就越来越难了,这其中的原因,也许教师比学生更容易体会。
第32题: [单项选择]不是负反馈调节特点的是() A. 使系统的活动保持稳定 B. 不可逆过程 C. 反馈信息能减弱控制部分的活动 D. 具有调定点 E. 具有滞后现象 参考答案:B
第33题: [单项选择]Every field of chemistry ______ different chemical reactions. A. holds B. consists C. composes D. involves 参考答案:D 答案解析:本题考查的是动词辨析。A“持有,容纳”,B,consist of“由…构成”;C为“组成”,常用作被动,be composed of:由…构成;D为“涉及,包括”。本题意思是:化学的每个领域都涉及不同