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问题 选择题

下列工具在使用时，属于省力杠杆的是（　　）

A．定滑轮

B．天平

C．瓶盖起子

D．镊子

答案

根据定滑轮和天平的特点可知它们是等臂杠杆，而镊子是费力杠杆，只有瓶盖起子是省力杠杆．

故选C．

默写题

（1）“神舟七号”遨游太空，让全世界再次感受到了中 * * “                                ，一览众山小”的雄心和气概。

（2）王维在《使至塞上》中用“                              ，长河落日圆”刻画了塞外奇特壮美的风光。

（3）日暮乡关何处是，                                    。

（4）人们常用《汉乐府·长歌行》中的“少壮不努力，                                           ”来提醒自己要珍惜青春，力求上进。

（5）《红楼梦》中有诗云：“质本洁来还洁去，不教污淖陷渠沟。”这让我们联想到周敦颐《爱莲说》中与之意义相近的名句：“出淤泥而不染，                                          。”

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填空题

Questions


·Read the following passage and choose the best word for each space.
Do you want to send an e-mail message to the White House
Good luck.
In the past, (26) President Bush — or at least those assigned to read his mail — what was (27) your mind it was necessary only to sit down at a personal computer connected to the lnternet and (28) a note to president@ whitehouse.gov.
But this week, Tom Matzzie, an online organizer with the A.F.L.-C.I.O., discovered that (29) with the White House had become a bit more (30) . When Mr. Matzzie sent an e-mail protesting (31) a Bush administration policy, the message was bounced back With an automated reply, saying he had to send it again in a new way.
Under a system (32) on the White House Website (33) the first time last week, those who want to send a message to President Bush must now (34) as many as nine Web pages and (35) a detailed form that starts by asking whether the message sender supports White House policy (36) differs with it.
The white House says the new e-mail system is an effort to be more responsive (37) the public and offer the administration "real time" access (38) citizen comments.
Completing a message to the president also requires (39) a subject from the provided list, then entering a full name, organization, address and e-mail address. (40) the message is sent, the writer must wait for an automated response (41) his message, (42) whether the addressee intended to send the message. The message is delivered to the White House only after the person using that e-mail address (43) it.
"Over (44) , it’s a very cumbersome process," said Jakob Nielsen, an authority on Web design. "It’s probably designed deliberately to (45) on their e-mail.\

A. forB. againstC. onD. over
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