澳大利亚出口的矿产品中,在世界占有重要地位的是( ) A.铝土和金刚石 B.煤炭

题型:选择题

问题:

澳大利亚出口的矿产品中,在世界占有重要地位的是(  )

A.铝土和金刚石

B.煤炭和铁矿石

C.铁矿石和锰矿

D.石油和天然气

考点:澳大利亚
题型:选择题

阅读理解。

     Do you believe there are aliens (外星人) ? Well, make a phone call and you will

know. A group of Americans can help. They make a device "talk" to aliens. If you

want to talk to an alien, you only need to visit www. Talk To Aliens . com , call l--900-2660300 and say, "Hello aliens. this is Earth calling. Can you hear me?" You can

say anything you want.

     But now. they only take phone calls from  people in the US. The call is $ 3. 99

every minute. After the hotline began in February, www. Talk To Aliens. com. has got hundreds of calls. There is one call every three minutes. They are also trying to send

people's e-mails. photos or videos into space.          

1. If you live in America and you want to know whether there are any aliens,         .

A. you can make a phone call

B. you can go to America for help

C. you can ask any scientist for help

D. you can talk to aliens

2. www. Talk To Aliens. com is a place where       .             

A. you can get some knowledge about aliens

B. you can talk to aliens

C. the aliens live

D. you can make a set of device to talk to aliens      

3. What does the underlined word refer to?      

A. The aliens.

B. The people who want to talk to aliens.

C. The Americans.

D. The group of scientists who can help you.                  

4. Which of the following is NOT right?

A. Only American people can call l-900-226-0300.

B. People from any country can call l-900-366-0300 now.

C. If you call the hotline for two minutes, you should pay $ 7. 98.

D. Every three minutes there someone is calling 1-900-226-0300.

5. From this article we know         .

A. there is only one call after the' hotline began in February

B. there are some aliens in the world

C. some Americans are trying to send information about humans into space

D. if you pay $2.99 for a minute, you can talk to aliens

题型:选择题

患儿女,11岁,水肿伴烟灰色尿3周,经抗感染及对症支持治疗效果差,尿量进行性减少。BP140/90mmHg,尿常规PRO(+),RBC15~20个/HP,血BUN38.5mmol/L,血Cr578.6μmol/L。

该患儿最可能的诊断是()

A.急性肾炎重型

B.急进性肾炎

C.肾炎型肾病综合征

D.慢性肾炎

E.迁延性肾炎

题型:选择题

如图,一水平导轨处在方向斜向左上方、与水平方向成60°的磁场中,磁场作用下一根通有恒定电流的金属棒在导轨上向右做匀速滑动,现将磁场方向顺时针缓慢转动30°,在此过程中金属棒始终保持向右匀速运动,则磁感应强度B的大小变化情况可能是

[ ]

A.一直变大

B.一直变小

C.先变大后变小

D.先变小后变大

题型:选择题

多根牙牙周膜面积最大的部位是()

A.根分叉处

B.根中1/2处

C.牙颈部

D.根中1/3处

E.根中1/4处

题型:选择题

若在窗体设计过程中,命令按钮Command0的事件属性设置如下图所示,则含义是()。

A.只能为"进入"事件和"单击"事件编写事件过程

B.不能为"进入"事件和"单击"事件编写事件过程

C.“进入”事件和“单击”事件执行的是同一事件过程

D.已经为“进入”事件和“单击”事件编写了事件过程

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