观测某目标的竖直角，盘左读数为101°23′36″，盘右读数为258°

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问题单项选择题

观测某目标的竖直角，盘左读数为101°23′36″，盘右读数为258°36′00″，则指标差为（）。

A.+12″

B.-12″

C.12″

D.以上都不正确

答案

参考答案：A

阅读理解

读对话判断对错。对的写“T”，错的写“F”。

Mike: Hi! What would you like for lunch?

Jack: I'd like some rice and beef.

Mike: Would you like some dessert?

Jack: What is dessert?

Mike: It's something sweet, like pudding, fruit or ice-cream.

Jack: I'd like ice-cream.

( ) 1. Jack would like some rice and soup.

( ) 2. Jack eats some rice and beef.

( ) 3. Dessert is something salty.

( ) 4. Jack eats ice-cream.

单项选择题

当人遭遇到雷电时，该怎么办（）。

A.快向高处跑

B.远离电线杆、烟囱

C.躲到大树下暂避