20世纪（）中美关系的缓和以及世界大三角政治格局的形成，改变了两级对抗的局面。 A.

根据上下文及首字母提示完成短文。（每空一词）

      An old woman is going shopping with a basket. She is going by boat. The boat is going across (穿过)

the river. Her basket is 1. e___________ now. Oh dear! Look! Her basket is in the 2. w___________. " Help!

My basket is in the river."

      A boy sees the basket. He says, " Don't worry! I can 3. g___________ it! " He takes off his shirt and

shoes. " Look 4. a___________ them for me, please! " he says, and 5. j___________ into the river.

      A duck sees the basket. " I can go by 6. b___________! " it thinks. It gets into the basket. The boy is

swimming in the river. " Where's the basket? " he asks. " It's over there! " answers the woman. " It's behind

you! It's under that 7. d___________." The boy gets to the basket. " Go away! " he says to the duck. The

duck comes 8. o___________ of the basket and swims away. The 9. b___________ takes the basket back

to the woman. " Oh, thank you very much." says the woman.

      " Not at all! " says the boy. " Do you have my shirt and shoes, please? " " Yes, here you are. Oh! what's

this in the basket? " " It's the duck's 10. e___________."

易引起心肌氧耗增加的因素不包括（）。

A.患者精神高度紧张

B.麻醉镇痛不全

C.快速性心律失常

D.使用吗啡类药物

E.血压过高

在京施工的总承包企业的工资保证金不少于（）万元。

A.100

B.50

C.150

D.200

计量标准的稳定性是计量标准保持其（）随时间恒定的能力。

A、示值

B、复现值

C、计量特性

D、测量范围

Duchenne型肌营养不良症的临床表现不包括（）

A.运动能力发育延迟

B.Gower征

C.翼状肩胛

D.跨阈步态