成功销售关键要保持积极的销售心态，具体包括：（） A.自我认同 B.组织认同

阅读理解。

     Kitesurfing as a water sport began in the 1980s, but didn't get popular until the end of last century. It is

also known as kiteboarding, and in some European countries as flysurfing. Kitesurfing works through wind

power (动力) by using a large kite to pull a rider on the water at high speed.

     At first, kitesurfing was a difficult and dangerous sport. Now it is becoming easier and safer because of

the safer kite design. For an able and strong person, kitesurfing can be a very fun, extremely exciting sport,

just like skating on the water with a feeling of flying. It has become more and more popular.

     Compared with other water sports, kitesurfing is easier to learn. A beginner can understand how to operate

the kite with 5-10 hours of training. And anybody aged from 13 to 65 can learn. It is not expensive to get the

equipment for kitesurfing, which costs $1,000 to 82,500. Training lessons range from $200 to $500 for two

or three hours.

     With the development of its equipment progress, kitesurfing is becoming even safer. After some training,

you can enjoy its excitement and challenging feeling. With the rising popularity of kitesurfing, most major

seaside cities have kitesurfing clubs. In China, Xiamen is the only place that has the kitesurfing club, which

provides professional kitesurfing training and equipments.

1. Kitesurfing has a history of about _____ years.

A. 30

B. 50

C. 100

D. 130

2. _____ is mentioned in the passage as the power of kitesurfing.

A. Water

B. Wind

C.The sun

D. The kite

3. The underlined word "range" in the passage means "_____" in Chinese.

A. 在……范围内变动

B. 按……顺序排列

C. 向 ……方向延伸

D. 根据……归类

4. The most important reason for the popularity of kitesurfing is that _____.

A. its price is getting lower and lower

B. more and more people are enjoying its excitement

C. its equipment progress makes it easier and safer

D. all people can learn and take part in it

5. The main idea of this passage is about _____.

A. the way of operating kitesurfing

B. the progress of kitesurfing equipment

C. the history of kitesurfing in China

D. the development of kitesurfing

以下关于SET协议的描述中，错误的是______。

A．可以保证信息在因特网上传输的安全

B．可以让商家了解客户的所有账户信息

C．可以使商家和客户相互认证

D．需要与认证中心进行交互

胚泡植于子宫内膜基底层。

国家新版《生活饮用水卫生标准》从今年7月1日起强制实施，其中饮用水消毒剂除了目前采用的液氯以外，补充了——氯胺（NH₂Cl）、臭氧（O₃）。

（1）O₃中氧元素的化合价是    。

（2）NH₂Cl由      （填数字）种元素组成，其中氯元素与氢元素的质量比是     。

（3）NH₂Cl用消毒时，发生反应NH₂Cl+X=NH₃+HClO，其中X的化学式是    。

工作面防尘管路可兼做（）。