贷款人的不安抗辩权基于借款人的行为，但不包括( )。A．丧失商业信誉 B．股票价格

读短文，判断对错。  

     It was Saturday. Tom stayed at home. His parents went to visit his

grandparents in another city. Tom did his homework and read books. After

lunch, he watched TV and played basketball with Jack.  He felt very tired:

In the evening, his parents came back and brought him some presents, They

were a schoolbag and a basketball. Tom felt very excited!

( ) 1. Tom didn't visit his grandparents.                         Yes口   No口

(     ) 2. Tom read books in the afternoon.                        Yes口   No口

(     ) 3. Tom felt tired after reading books.                       Yes口  No口

(     ) 4. Tom's parents bought a new schoolbag for him.   Yes口  No口

(     ) 5.  Tom was happy in the evening.                           Yes口  No口

下图为某观测站某年8月1日至3日雨量及河流水文过程线图。读图，回答小题。

小题1:该河段易出现险情的时间为   (　　)。

A．8月1日6时至12时

B．8月1日9时至8月2日18时

C．8月2日6时和8月3日3时

D．雨停后15小时至36小时小题2:未来在相同降雨状态下，如果图中水文过程线(　　)。

A．洪峰水位升高，可能是由于上游大量退耕还湖

B．洪峰水位降低，可能是由于下游修建大型水库

C．洪峰点向右偏移，可能是由于上游植被恢复较好

D．洪峰点向左偏移，可能是由于下游开挖泄洪通道

中枢淋巴器官特点之一是：

A．较周围淋巴器官发生晚

B．均以网状细胞和网状纤维为支架

C．培养效应性T淋巴细胞或B淋巴细胞

D．淋巴细胞增殖不受抗原直接影响

E．出生前结构功能尚未发育完善

电气火灾和爆炸的原因是什么？

在E-R图中，用来表示实体联系的图形是

A．椭圆形

B．矩形

C．菱形

D．三角形