读“自然灾害与中国奶牛业发展示意图”（图4），回答问题。
小题1:关于草场自然灾害的叙述，正确的是
A．草原雪灾、火灾直接损毁草场资源，对奶牛业的发展没有影响
B．草原水灾、旱灾直接影响奶牛业的发展，对草场资源没有影响
C．草原鼠害、虫害通过破坏草场资源，间接影响奶牛业的发展
D．草原病害、酸雨对草场资源和奶牛业的发展没有直接影响小题2:关于我国奶牛业发展的叙述，正确的是
①过度放牧，使奶牛数量增多，促进奶牛业的发展
②乱采、乱挖，导致鼠害猖獗，制约奶牛业的发展
③奶牛业的过度发展，会加剧草原人为灾害对草原的破坏
④影响奶牛业发展的因素有草原灾害、社会化程度、奶牛品质等
A．①②
B．②③
C．③④
D．②④
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If you want to live in Hawaii,you need to think about how to save money,because it is one of the most expensive states in the USA.
Hawaii buys most of its goods from other countries.This makes the prices very high.Eating out can be expensive.Breakfast is at＄5 or＄8 and lunch ia around＄12,while dinner goes from ＄15 to＄30.
What makes living in Hawaii more difficult is that there are few high-paying jobs. For example, it is harder to find engineering jobs than waitressing jobs.
Here is some advice on how to get around and enjoy living in Hawaii.
●Check out online travel websites, magazines and books for information about the islands, from their beaches to their restaurants.
●Find hotels by reading newspapers. You can also find someone to share your room to save money.
●Try to find a job. Craigslist is a good website to start your search. Also, check the newspapers.
●Buy your food and other things at cheap chain stores like Costco and Wal-Mart.
Hawaii is an expensive place to live, but there are ways to save your money if you shop properly.
小题1:What’s the price of having breakfast in Hawaii?
A．$ 15.
B．$ 12.
C．$ 8.
D．$ 30.小题2:Craigslist is a website to find _________.
A．hotels to live in
B．information about jobs
C．cheap food
D．places to travel小题3:How many pieces of advice does the writer give on saving money in Hawaii?
A．Two.
B．Three.
C．Four.
D．Five.小题4:According to the passage, which of the following is NOT true?
A．Hawaii’s cost of living is higher than many other places in the US.
B．It is more difficult to find a job as a waitress than an engineer.
C．Most of goods in Hawaii are from other countries.
D．Things in Wal-Mart are cheaper.小题5:The passage mainly talks about _____.
A．the high cost of living in Hawaii
B．the beautiful views of Hawaii
C．how to enjoy staying in Hawaii
D．how to find good jobs in Hawaii
2012年1月15日，我国广西省龙江河检测出重金属镉含量严重超标，重金属镉具有毒性，长期过量接触镉会引起慢性中毒，影响人体肾功能。镉元素有多种核素，下列关于95 48Cd和97 48Cd说法正确的是（ ）
A．95 48Cd和97 48Cd互为同素异形体
B．95 48Cd和97 48Cd质量数相同
C．95 48Cd和97 48Cd是同一种核素
D．95 48Cd和97 48Cd互为同位素
( )属于基金信息披露的实质性原则。
A．及时性原则
B．规范性原则
C．易解性原则
D．易得性原则
关于阿米巴原虫，下列哪些是正确的（）
A.小滋养体在肠腔内寄生对外界抵抗力强，具有感染性
B.大滋养体有致病力，为组织致病型
C.包囊对外界抵抗力较差，不具有感染性
D.溶组织内阿米巴有致病株与非致病株2类
E.生活史有3期
一个在基类中说明的虚函数，它在该基类中没有定义，但要求任何派生类都必须定义自己的版本，此虚函数又称为( )。