森林古猿的一支,由树栖下到地面生活后,由于环境的改变,其一些生活方式必须改变,这

题型:选择题

问题:

森林古猿的一支,由树栖下到地面生活后,由于环境的改变,其一些生活方式必须改变,这为它们进化成人类奠定了基础,下列所述与此无关的是(  )

A.要直立行走,以便寻找食物发现敌害

B.前肢的解放,使前后肢分工明确,前肢逐渐变成了手

C.为了提高生产效率,它们研究发明了各种工具

D.由于经常围捕猎物,它们要相互协作交流,因而逐渐产生了语言

考点:进化的历程
题型:选择题

According to Andrew, it never would have happened if he had not had a flat tire on Highway 10 last night at about 7:30. He was on his way to attend a three-day sales meeting when he had the flat. tyre. Unfortunately, he did not have a spare, so he pushed the car off the road, locked it up, and managed to thumb a ride back to Pine Grove. It was after eleven o'clock when he finally got home, and it was then that his real problems started.

When Andrew left home at about 5:30, he had told his wife not to expect him back until Thursday or Friday. Knowing that his wife was nervous about staying in the house alone at night, Andrew took the precaution of checking all the windows in the house to be sure they were locked, so that he could report to his wife that the house was secure. He convinced his wife that the house was burglar-proof, and that she would be perfectly safe, providing she bolted (闩上)the front door as soon as he drove away.

Andrew's only thought as he made his way in the dark to his front door was how surprised his wife was going to be to see him, since he was not supposed to be back until Thursday or Friday. He had forgotten about the bolt on the front door. When he turned his key in the lock and the door wouldn't budge, he remembered the bolt. And he remembered that he had carefully locked all of the windows.

Although Andrew didn't know it at the time, a next-door neighbor had seen him approaching the house and had watched him go up the steps to the front door. In the dark, it was impossible for the neighbor to recognize Andrew, and, besides, the neighbor knew that Andrew had gone out-of-town for a three-day meeting. As a matter of fact, Andrew had asked the neighbor to keep an eye on the house while he was gone.

Finding that he couldn't get in, Andrew began pounding(砰砰地敲) on the front door to get his wife to open the door. According to Andrew, however, his wife is a very sound sleeper, and he knew it was going to be hard to wake her up. In the meantime, because of all the noise he had been making, the neighbor was convinced that somebody was trying to break into the house; so she called the police.

When we talked to Andrew at the country jail this morning, he said that he still didn't understand how the police managed to circle the house without his seeing them. He stated that he had decided the only way to get in was to break one of the dining room windows, and that he was about, to hurl his briefcase into the window to break it when two of the officers grabbed him from behind.

Andrew could not make the officers believe that he lived there; so they took him off to jail. Apparently, he did succeed in convincing them that they ought to wake up the woman in the house to check his story. But there was no answer when they knocked at the door. He tried to explain to them that his wife was a very sound sleeper, but they concluded there was nobody in the house.

小题1:As Andrew had a flat tyre on the way, he          .

A.had to take another car to attend the meeting

B.rode on a bike to attend the meating

C.asked for a lift to go back home

D.borrowed a car to go back home小题2:When Andrew was approaching the house        .

A.he was sure he would pleasently surprise his wife

B.he was deep in thought

C.he was sure that his neighbor would help him

D.he was worried about how to wake his wife up小题3:The  underlined word “budge” in Paragraph 3 probably means           .

A.move slightly

B.lock tightly

C.knock lightly

D.close tightly小题4:Why did the police officers take Andrew off to jail?

A.It was too late for them to contact Andrew’s wife.

B.Andrew did not explain clearly why he broke into the house.

C.They thought it unnecessary to check Andrew’s story.

D.they concluded that Andrew’s story was a complete invention.

题型:选择题

计算机的内存储器与外存储器相比较

A.内存储器比外存储器容量小,但存取速度快,价格便宜

B.内存储器比外存储器容量大,但存取速度慢,价格昂贵

C.内存储器比外存储器容量小,价格昂贵,但存取速度快

D.内存储器存取速度慢,价格昂贵,而且没有外存储器的容量大

题型:选择题

可行性研究应该做到( )。

A.总结性,客观性,实用性,可靠性

B.独立性,科学性,盈利性,安全性

C.广泛性,科学性,独立性,复合性

D.预见性,公正性,可靠性,科学性

题型:选择题

冲压生产前需要了解()。

题型:选择题

对壁纸墙面有气泡的,可用()将空气抽空。

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