每个矿井至少有（）个独立的能行人的直达地面的安全出口。 A.一 B.二 C.三

阅读下面短文。根据短文内容判断句子的正误。正确的涂“A”，错误的涂“B”。

     What would the future life be like? I think we will be able to travel faster and safer around the world and

into space. Maybe one day we can work in Beijing, sleep in Chengdu and visit the moon for a holiday.

     We will have new energy (能源) that doesn't make pollution. Possibly, people will find ways to use cleaner

things, such as sea water, to make energy without polluting the earth.

     We will have machines that can copy everything in the future. Put a cake on the machine and it makes a

new one. If the machine is like a fax-machine (传真机), we can send food and presents to our friends easily.

     We will have clever robots that work for us, and the robots can bring us useful things and take away our

rubbish. Now we have to press a key or type a word to make a machine work. But in the future, if we think

of something, the machine can make it for us. The machine can understand our ideas.

     We will be able to go into computer games and films, and everything will feel real. We will be able to make

our homes like forests or sunny beaches or anything we want. Perhaps, one day we will be able to collect our

dreams and put them on DVDs.

( )1. In the future, we can work in one city and sleep in another.

( )2. In the future, we can make energy by using sea water.

( )3. In the future, we can only copy food by machines.

( )4. In the future, we can make a new machine by pressing a key.

( )5. People can probably make DVDs of their dreams in the future.

独立桅杆的竖立，采用辅助桅杆竖立主桅杆时，常用滑移法、旋转法和扳倒法，此3种方法比较，用（）最安全。

A、扳倒法

B、滑移法

C、旋转法

D、都一样

以下哪些特点不是阔翼类动作中出现的（）

A、阔翼类飞行时上下扇动有力，下扇时翅膀张的较大

B、阔翼类飞行中翅膀抬起时翅膀略收拢

C、阔翼类飞行时常有滑翔

D、阔翼类飞行动作急促、琐碎

主题树方式是一种可供检索的等级式主题目录。

人在质的方面的物质要素和精神要素的总和称( )。

A．身体发展

B．人的素质

C．心理发展

D．奠基工程