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问题 解答题

两个奇数的和是偶数，两个奇数的积是奇数．______．

答案

根据分析：如：3+5=8，8是偶数；3×5=15，15是奇数；

由此，两个奇数的和是偶数，两个奇数的积是奇数．这种说法是正确的．

故答案为：正确．

阅读理解

阅读理解。

                                                                        A letter

Dear Li Ting,

     My new school is very nice. There are 50 students in my class. Two girls are America. But they can speak

Chinese very well. Their fathers work in our city. Billy is an English boy. He comes from London. He can speak little Chinese. They like China very much. They also like our Chinese food. They are very friendly. How many

Chinese students are there in our class? How many Young Pioneers are there in our class? Can you guess?

Please write soon!

                                                                                                                              Love from

                                                                                                                                Liu Tan

1. Who writes the letter?

____________________________________________

2. The two girls are from __________________ .

3. Do they like Chinese food?

_________________________________________________

4. 将划线句子翻译成汉语.

_________________________________________________

5. How many Chinese students are there in the class?

_______________________________

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单项选择题 A1/A2型题

以下有关钙通道阻滞剂的描述，不正确的是（）。

A.主要通过扩张小动脉，SVR下降来降低血压

B.不减少心排血量，不产生体位性低血压

C.易出现停药后血压反跳现象，但有防治术后脑水肿的效应

D.可用于慢性阻塞性肺疾病的患者

E.无快速耐药性
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