下列关于《证类本草》描述正确的是（） A.创作于宋代 B.作者为唐慎微 C.收载17

保险合同的中止，在（）合同中最常见。

A.财产保险

B.人寿保险

C.补偿性保险

D.给付性保险

某化工厂排出的废液中含有AgNO₃、Zn(NO₃)₂和Cu(NO₃)₂三种物质，为了分离并回收金属银和铜，化学课外小组的同学设计了如下实验方案：

根据以上的实验方案你认为：

⑴固体X是           ，有关的离子方程式为                              。

⑵固体Y是         ，有关的离子方程式为                             。

⑶滤液B是                   。

阅读理解。

     Google on Tuesday said it reached a settlement in a group action suit(诉讼)against the search giant over

privacy breakings related to its Buzz socials networking program.

     In the settlement, Google agreed to pay $ 8.5 million into a fund (基金)for privacy education the company

made clear that the agreement did not include cash payments to users.

     Buzz, started last February as an application within Gmail, in some cases exposed the lists of persons

touched and other data of users to other Gmail users.

     How did the company warn users that they were included in the settlement? By Gmail of course.

     "Google rarely inform Gmail users via email, but this time we let you know that we've reached a settlement

regarding Google Buzz," the firm said in messages sent to its U. S. users. Some analysts think the company

has 170 million Gmail users worldwide.

     "The settlement acknowledges that we quickly changed the service to address users'concerns," Google

wrote.

     Google said that everyone in the United States who uses Gmail was included in the settlement unless they

decide to take no party before December 6, 2010. On January 31, 2011 the U. S. distriet Court for the

Northem District of California in San Jose will hold a fairness hearing on the settlement.

     Google is under increasing pressure from federal regulators (监管者) for privacy problem involving Buzz

and its Street View mapping service. Last week, the FTC closed its looking into Google's collection of

Wi - Fi data with Street View mapping cars, saying the company had made sufficient promises to get rid of

data it collected and strengthen its privacy training among employees.

1. "the search giant" in the first paragraph refers to _____.

A. Buzz

B. Gmail

C. Google

D. Street View

2.What will Google do to protect its users' privacy?

A. Further educate its staff.

B. Pay cash to its users.

C. Hold a fairness hearing.

D. Stop collecting its users' data.

3. According to the passage, _____.

A. Google was accused of cheating its users.

B. Google users are all affected by the settlement

C. Google often sent a message to its users throughout the world

D. Googles' Street View mapping service is questioned by federal regulators

测尘工采样后，应做到（）。

A、应将将滤膜放在干燥器内干燥1小时

B、如发现滤膜表面有水珠，要先将滤膜放在60℃~65℃烘干2小时，然后放入干燥器内干燥30分钟

C、最后置于分析天平上称重，直至恒重

D、记录所称重量

现国家分析技术标准用再现性表现符号为（）