将具有下列长度的三条线段首尾顺次相连,能组成直角三角形的是[ ] A.1,2,3

题型:选择题

问题:

将具有下列长度的三条线段首尾顺次相连,能组成直角三角形的是[ ]

A.1,2,3

B.5,12,13

C.4,5,7

D.9,80,81

考点:勾股定理的逆定理
题型:选择题

某公司是一家高成长的公司,目前公司总价值30000万元,没有长期负债,发行在外的普通股5000万股,目前股价6元/股。该公司的资产(息税前)利润率15%,所得税率25%,预期增长率7%。

现在急需筹集债务资金6000万元,准备发行10年期限的公司债券。投资银行认为,目前长期公司债的市场利率为10%,该公司风险较大,按此利率发行债券并无售出的把握。经投资银行与专业投资机构联系后,建议债券面值为每份1000元,期限10年,票面利率设定为5%,同时附送40张认股权证,认股权证在5年后到期,在到期前每张认股权证可以按5元的价格购买1股普通股。

假设该公司的资产、负债及股权的账面价值均与其市场价值始终保持一致。

要求:

判断此可转换债券的发行方案是否可行。

题型:选择题

苏伊士运河沟通了           海和            海,大大缩短了            洋至             之间的航程。

题型:选择题

阅读理解。

     Students are leaving the junior high school. What are they taking with them? A lot of things for sure,

but the most important thing is friends.

     We asked some teachers to give us one last lesson. The lesson is proverbs (谚语、格言) about friends.

Proverbs teach people about life. Older people often teach proverbs to younger people. Every culture has

proverbs. They are short and easy to remember.

     Mrs Minelli says, "It is important to remember this Sicilian proverb, 'Only your real friends will tell you

when your face is dirty.' It means that only good friends tell you when you are making a mistake." 

     Mr Schmidt says, "I have a favourite proverb about friends. 'Friendship is a plant we must water.' It is

German. It means that we need to take care of friends like we take care of a garden." Mr Tulga says, "My

grandfather in Turkey told me, 'Nobody is so rich that he can throw away a friend.' It means that everyone

needs friends. Be good to them."

     The good news is: there is no test for this lesson. The bad news is-we will miss you. Goodbye, friends!

Don't forget us!

1. As the proverb says, _____ will tell you when you are making mistakes.

A. real friends

B. older people

C. some teachers

D. younger people

2. Which is the best proverb to the meaning "Take care of friends like we take care of a garden"?

A. A friend is easier lost than found.

B. Friendship is a plant we must water.

C. Nobody is so rich that he can throw away a friend.

D. Only your real friends will tell you when your face is dirty.

3. Which of the following is true from the passage?

A. Only some countries have their proverbs about friends.

B. After the last lesson, the students will have a test for it.

C. If you are rich enough, you can throw away your friends.

D. Proverbs are usually short, and they teach people about life.

4. The writer of the passage mainly wants us to know _____.

A. some proverbs about culture

B. ways to take care of a friend

C. the importance of friendship

D. students' feelings in the last lesson

题型:选择题

标志着马克思主义诞生的文献:_____________

题型:选择题

几个月的宝宝可以使用牙胶?

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