用人单位对劳动者进行职业培训，都需要收取一定的费用。( )

switch语句中的表达式的值只能是int、byte、short和______型的值。

在2012年11月6月举行的美国大选中，现任总统、民主党总统候选人（）赢得胜利。继2008年成为美国历史上首位黑人总统之后，他再次以连任创造历史。

A.罗姆尼

B.习 * *

C.克里

D.奥巴马

SeaWorld San Diego is one of the world's famous marine adventure parks with 200 acres of world-class shows, thrilling rides and unforgettable animal encounters. More than 80 million visitors have explored the mysteries of the sea here.and spent the day checking out all eleven shows including the performance of Shamu the killer whale. In between shows you can enjoy yourself on Shipwreck Rapids. When you find that the excitement has drained your energy you can take a break to watch Shamu close! Summer special SeaWorld San Diego 7-days pass

Adults at Kid's Price! Unlimited admission to SeaWorld San Diego for up to 7 consecutive(连续的)days from date of first use.(available through September 30, 2010)

Adult (ages 13+) Gate Price $69.00 Your Price$56.50

Child (ages 3-12) Gate Price $59.00 Your Price $56.50

7-Day Pass FREE BONUS: SeaWorld San Diego

The Go San Diego Card is your ticket to the best San Diego has to offer. For one price you can enter over 55 attractions – including the San Diego Zoo, The U.S.S. Midway, Legoland, Whale Watching Excursions, and much more. The Go Card is the only ticket you need, saving you up to 55% compared to buying individual admissions. Plus, enjoy VIP access to some of San Diego's top attractions.（available April 1, 2010 – March 31, 2011）

Adult (ages 13+) Gate Price $284.00 

Child (ages 3-12) Gate Price $210.00

Child’s Ticket for Only $5.00

For nearly 50 years, SeaWorld Parks & Entertainment has been rescuing and rehabilitating animals in need. We also work to support conservation efforts around the world. It’s our passion and our duty. We would like to invite you to be a part of it.

Now through December 31, 2010, when U.S. residents purchase a full-price adult admission, children ages 3-12 receive a ticket to SeaWorld for only $5.00. (Limit of one $5.00 SeaWorld Cares child ticket with each adult ticket purchased - up to a maximum of 6 child tickets). If you require more child tickets, you'll need to purchase these from the 7-day child ticket listed above. 100% of the proceeds will be donated by SeaWorld to the SeaWorld/Busch Gardens Conservation Fund.

Adult (ages 13+) Gate Price $69.00 Your Price$69. 

Child (ages 3-12) Gate Price $59.00 Your Price $5

小题1: The purpose of the passage is ___________.

A．to describe the beauty of SeaWorld San Diego

B．to draw more visitors in the summer of 2010

C．to tell of the most exciting activities

D．to introduce various tickets for children小题2: If your couple and your child（age 11）take a tour during Summer special SeaWorld San Diego, _______.

A．you’ll have to pay more than $179.50

B．you can visit the park any day you like during the season

C．you can start your visit any day before September 30, 2010

D．you have only to pay no more than $184.50小题3: In almost half a century, by SeaWorld Parks & Entertainment ____________.

A．many more animals have been bought

B．many more animals have been treated and cured

C．natural resources have been protected

D．more Americans are called on to join in the activity小题4: From the last paragraph we can learn that _________.

A．you can receive a ticket to SeaWorld for only $5.00

B．an adult ticket can be followed at most 6 child tickets

C．a foreign child can get a ticket to SeaWorld for only $5.00

D．only American citizen can get a free child tickets

硝酸银AgNO₃中N元素的化合价是

A．+1

B．+3

C．+4

D．+5

不得进行露天作业的恶劣天气包括（）。

A.大雨

B.大雪

C.大雾

D.台风

E.六级大风