问题 选择题

下面对骨骼肌的叙述,不正确的是                              (   )

A.骨骼肌有肌腹和肌腱构成

B.骨骼肌两端的肌腱固定在同一块骨的两端

C.骨骼肌里有许多血管和神经

D.骨骼肌受到刺激都能收缩

答案

答案:B

题目分析:骨骼肌由肌腱和肌腹两部分组成,同一块骨骼肌的两端跨过关节分别固定在两块不同的骨上,骨骼肌有受刺激收缩的特性,骨骼肌只能收缩牵拉骨而不能将骨推开,因此一个动作的完成总是由两组肌肉相互配合活动,共同完成的,据上分析,骨骼肌两端的肌腱分别固定在同一块骨的两端说法是不正确的。

点评:此题为基础知识题,解答此题的关键是熟记骨骼肌的两端的肌腱,分别附着在相邻的两块骨上,中间部分是肌腹,骨骼肌有受刺激收缩的特性。

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Part 4


Questions 26-45


·Read the following passage and choose the best word for each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
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.telling

B.to tell

C.tell

D.told