一轮船从A地到B地需7天,而从B地到A地只需5天,则一竹排从B地漂到A地需要的天

题型:选择题

问题:

一轮船从A地到B地需7天,而从B地到A地只需5天,则一竹排从B地漂到A地需要的天数是[ ]

A.12

B.35

C.24

D.47

考点:分式方程的应用
题型:选择题

在“测定小灯泡功率”的实验中,小灯泡的额定电压为3.8V, 灯丝的电阻约为5Ω,如图是小明同学做这个实验时 连好的电路,请指出图中存在的三处错误.

(1)_________________________________________;

(2)_________________________________________;

(3)_________________________________________。

题型:选择题

精彩回放(根据课文内容填空)。

1.有志者(      )。

2.莫以善小(     ),莫以恶小(     )。

3.业精于勤,(     );行成于思,(     )。

4.在本单元的课文中,(  )为中华之崛起而读书;(  )在少年时期有幸得到了(  )的作文指导;(  )国的小姑娘(  )自助旅行欧洲。

题型:选择题

欧姆在探索通过导体的电流和电压、电阻关系时,因无电源和电流表,他利用同一金属块两端分别浸在冷水和热水中产生电动势来代替电源,用小磁针的偏转检测电流,具体做法是:在地磁场作用下处于水平静止的小磁针上方,平行于小磁针水平放置一直导线,当该导线中通过电流时,小磁针会发生偏转;当通过该导线电流为I时,小磁针偏转了30º,则当他发现小磁针偏转60º时,通过该直导线的电流为(已知直导线在某点产生的磁场与通过直导线的电流成正比,忽略小磁针大小的影响)(    )

A.2I

B.3I

C.I

D.无

题型:选择题

阅读理解。

     Teen Dating can be fun if you are aware of its pros and cons and are also aware of the ways to protect

yourself. There are a couple of suggestions you would like to know before you are out for dating.

     Do not go out for dating with somebody whom you have seen only a few times and not known much

about.

     Before leaving for a date, know the exact plans for the evening and make sure a parent or a friend knows

these plans and what time to expect your home. Let your date know that you are expected to call or tell that

person when you get in.

     Similarly, if you leave party with someone you do not know well, make sure you tell another person you

are leaving and with whom. Ask a friend to call and make sure you arrive home safely.

     No matter how good the person appears to you, trust your inner instincts (直觉). If a situation makes

you uncomfortable, try to stay calm and think of a way to remove yourself from the situation without letting

your date realize what is going on in your mind.

     Be aware of your decreased ability to react under the influence of alcohol or drugs and keep yourself in

control when out for a date.

     Always stay firm, straightforward and clear in your relationships, thoughts, decisions and judgments.

Never let a doubt come to your mind or face when out for dating. If you are firm and clear in your

communication, your date will always be careful in dealing with you.

     You should think ahead about ways to be safe if you are in a dangerous or potentially (潜在) dangerous

relationship. Adults, like parents, teachers, counselors, can be trusted in such cases.

1. Which of the following is forbidden when dating according to the passage?

A. Knowing the plan for the evening.

B. Telling your parents about the date.

C. Going out for dating with a stranger.

D. Telling the person you date that your parents know about the date.

2. The underlined word "date" in the third paragraph might mean _____.

A. a time

B. a plan

C. a person

D. a place

3. If you feel uncomfortable,you should _____.

A. call your parents

B. leave as soon as possible

C. speak out what you are thinking

D. trust the person you're dating with

4. The best title for this passage might be _____.

A. Be Careful With Your Friends

B. Never Go Out Dating

C. Safety Measures For Teen Dating

D. Dating Out Is Always Dangerous

题型:选择题

蜕变期的创业团队共有()个结果。

A.1

B.2

C.3

D.4

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