随着车速的提高，驾驶员的有效视野会（）。 A.保持不变 B.越来越宽 C.越来越窄

综合填空。

Dear Sam,

     Thanks for your letter. I'm very happy you can(1)w_________ to me. My name is Zhang Qian. I'm a

Chinese(2)g_________. I'm medium(3)h_________ and not very heavy. I have black, straight hair. I like

basketball and I am the(4)c_________ of our school basketball team. I like reading magazines and

(5)n_________ after school. 

     In your letter you asked me something about Beijing. Beijing is very beautiful. I visited Tian'an Men

Square and the (6)P_________ Museum last year. The food in Beijing are (7)d_________. Some food are

cheap, but some are very(8)e_________.

     I am learning English now. I often (9)t_________ with foreigners in English, and they are very

(10)f_________. Let's be good friends.

                                                                                                                          Yours

                                                                                                                       Zhang Qian

计征消费税和增值税的价格，均为含消费税金，不含增值税金的价格。（）

梯级下降定位点是指（）。

A.在一个航段内，确认已安全飞过控制障碍物时允许再下降高度的定位点

B.在整个进近程序内，确认未安全飞过控制障碍物时允许再下降高度的定位点C.在一个航段内，确认未安全飞过控制障碍物时允许再下降高度的定位点

D.在整个进近程序内，确认已安全飞过控制障碍物时允许再下降高度的定位点

雕制模型要迅速理解设计师的构想，头脑中始终保持着（）的形体。

治疗肾素型高血压病首选药是（）

A.肼屈嗪

B.胍乙啶

C.利血平

D.卡托普利

E.氢氯噻嗪