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根据文意及首字母提示完成短文。

     Jack is a schoolboy. He c__1__ from England. This year, he is thirteen years old. He l__2__ in a

small town near London. He lives with his grandmother (奶奶). His parents w__3__ in London. They

come back home to visit Jack at w__4__. Jack goes to school by b__5__ every day. At school, he likes

studying all the l__6__. He is good at English. He l__7__ to the teachers carefully (认真) in class. He

works very h__8__ at his lessons. After school, he does his h__9__. He w__10__ TV only on Sunday

evening. Jack is a good boy and his parents like him.

使用万用表测量电流时，必须（）到被测电路中。

A.并联

B.串联

C.混联

D.串并联

浅表肿物活检适用的麻醉方法为（）。

A.针刺麻醉

B.全身麻醉

C.局部麻醉

D.椎管内麻醉

E.复合麻醉

彩色三要素用哪三个物理量表示？

在PFD上出现DH（决断高）故障旗（琥珀色）时，表示：（）

A、飞机到达选定的决断高。

B、飞行员没有在MCDU中输入DH数据。

C、DH功能故障。