(本题满分6分)九年级某班组织班团活动,班委会准备买一些奖品.班长王倩拿15元钱

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问题:

(本题满分6分)九年级某班组织班团活动,班委会准备买一些奖品.班长王倩拿15元钱去商店全部用来购买钢笔和笔记本两种奖品,已知钢笔2元/支,笔记本1元/本,且每样东西至少买一件.

⑴有多少种购买方案?请列举所有可能的结果;

⑵从上述方案中任选一种方案购买,求买到的钢笔与笔记本数量相等的概率.

考点:概率的意义随机事件必然事件列举法求概率
题型:解答题

---Come to my family for dinner, please.

----     .

A.I’m very busy

B.See you in the evening

C.Yes, I would

D.Oh, thank you for your invitation

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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.at

B.on

C.for

D.in

题型:解答题

()水果的维生素C是苹果的10倍,其维生素A是苹果的50倍。

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少油灭弧器常采用哪几种灭弧方式?各有什么特点?

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二尖瓣区收缩期杂音特点为()

A.喷射性

B.叹气样

C.机器转动声

D.隆隆样

E.吹风样

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