福建省的少数民族人口占全省的l.71％左右。经过长期的经济文化等方面的交往，各族

AMI患者半夜突然出现呼吸困难，咳粉红色泡沫痰，第一心音减弱，舒张期奔马律，心尖可闻及2/6级收缩期杂音。该患者诊断为（）。

A.右心衰竭

B.室壁瘤

C.急性左心衰竭

D.支气管肺炎

E.心肌梗死后综合征

Directions: Complete the following passage by filling in each blank with ONE word that best fits the context.

New studies show how food and its production affect the globe and its climate. The process of making a hamburger, for example, requires lots of energy. A cow has to be fed and raised on farmland. And cow waste is a major source of methane（沼气）—  48 especially powerful greenhouse gas. The cow has to be killed. The meat has to be processed and shipped,   49 takes fuel. Most of the cow won’t even be used for meat people eat. By the time a hamburger finally lands on a dinner plate,   50 has made bad effect on the environment.

We can reduce the production of global warming gases by eating less beef. Other kinds of meat like pork and chicken do  51 harm to the environment ---at least  52 terms of the amount of greenhouse gases released.   53 , all kinds of meat are harder on the planet than vegetables.  54 changing our diet to less meat and more vegetables, as it turns  55 , may do the world some good.

一只黑色公羊和一只黑色母羊交配，生了两只黑色子羊和一只白色子羊。下列对这一事实的有关叙述，不正确的一项是（   ）

A．绵羊的黑色与白色是一对相对性状，它们都是可遗传的

B．黑色是显性性状，由显性基因控制，白色是由一对隐性基因控制的

C．黑色子羊的基因组成可能是AA，也可能是Aa

D．黑色公羊的基因组成可能是AA，也可能是Aa

发挥自己的创造性思维：请说出下列题目的答案，多说几种。

　　1+1=？　　4+9=？

　　5+7=？　　6+18=？

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Java语言中，移位运算符包括：＞＞、＜＜和______。