以一种高分子化合物为囊材，将囊心物分散在囊材溶液中，然后加入凝聚剂，使囊材凝聚成囊，

某校九年级（2）班（1）组女生的体重（单位：kg）为：38，40，35，36，65，42，42，则这组数据的中位数是（    ）。

阅读理解。

     It was reported last week that developers could take photos from Apple mobile and Google

Android devices without the phone owners knowing that the images were being taken. In Apple's

case, developers can also obtain the location information for each photo.

    Senator(参议员) Charles Schumer said in a telephone interview that his office had spoken with

officials at both Apple and Google on Monday.

     "We asked them if they could find a way on their own to prevent Apple from having access to

private info," Mr. Schumer said. "They were friendly and open to the idea that this ought to be

changed."

     On Sunday, Mr. Schumer said that he  planned to send a letter to the Federal Trade Commission

(联邦贸易委员会) asking the agency to investigate Apple and Google after the privacy concerns

came to light. Claudia Bourne Farrell, an F.T.C. spokeswoman, said the agency had received the

letter but she could not comment further.

     "It sends shivers up the spine to think that one's personal photos, address book, and who knows

what else can be obtained and even posted online without consent," Mr. Schumer wrote in his letter

to the F.T.  C. "If the technology exists to open the door to this kind of privacy invasion, then surely

technology exists to close it, and that's exactly what must happen."

     Mr. Schumer said if Apple and Google could not come to an agreement to fix the problem, then

he would be forced to take the issue further.

     He said other companies had been willing to work with his office to fix issues. "I'm optimistic that

we can get this changed without any regulation," he said. "If it's not changed, then we'll look the F.T.C,

and if that doesn't work then we'll look at legislative approach."

     The F.T.C. has warned companies to try to be more vigilant(警醒的) in their efforts to protect

consumers when it comes to privacy.

1. The senators spoke with officials at both Apple and Google       .

A. to discuss whether it is illegal to have access to private information.

B. to stop them from developing the technology of taking photos.

C. to urge them not to invade consumers' privacy.

D. to keep them from obtaining the location information for each photo.

2. Which of the following statements is true?

A. Privacy invasion from Apple has existed for a long time.

B. Privacy invasion from Google has existed for a long time.

C. Apple and Google have decided to make a change.

D. Mr. Schumer takes the privacy concerns caused by Apple and Google seriously.

3. Mr. Schumer's letter to the F.T.C. mainly shows that the technology to open the door to privacy

    invasion       .

A. causes people to worry about the safety of their personal information .

B. can be used if permitted.

C. causes personal information to be posted online without permission.

D. causes privacy invasion to happen frequently.

4. If the privacy concerns can't be solved with the help of the F.T.C.,      .

A.The companies will be fined.

B. The companies will be closed.

C. The senators will turn to legislation.

D. The senators will force the companies not to invade privacy.

5.Where can we read about the passage?

A. In a science report.        

B. In a newspaper.

C. In a magazine            

D. In a textbook.

强心苷被本植物中的酶水解时，酶解作用只能使哪一部分苷键断裂（）

A.D-葡萄糖部分苷键断裂

B.苷元与去氧糖之间的苷键断裂

C.去氧糖与去氧糖之间的苷键断裂

D.去氧糖与羟基糖之间的苷键断裂

E.所有苷键断裂

一个放大器具有20dB的信号增益，其意义是（）

A.放大器把相当于输入信号的100倍的能量从电源转移到了输出负载

B.放大器产生了当于输入信号的100倍的能量，供给了输出负载

C.放大器把相输入信号的能量放大了100倍

D.放大器把相输入信号的能量放大了99倍

按砂浆用途分为哪几种？