决定战争与和平问题的职权由国家 * * 行使。（）

相比企业自营物流而言，外包物流模式主要的优势在于（）。

A.有效降低物流成本，提高企业核心竞争力

B.提高企业运作柔性

C.对物流运作全过程进行有效监控

D.得到更加专业化的服务

E.降低和分担风险

病毒像个刚出生的婴儿，除了它的生命和一张吃奶的嘴外便一无所有，毫无独立生存的能力。故而病毒只能寄生在人或动物的细胞内部，靠“窃取”细胞里的现成营养才能生存。一旦被人排出体外，离开了安乐窝的病毒就活不了几个小时。 根据以上文字，可以推出( )。

A．排出人体外的病毒仍然可以存活一段时间，这至少意味着我们不应该对人体排泄物中病毒掉以轻心

B．病毒的寄生特性很强，在恶劣的环境中能长期存活

C．病毒没有独立生存的能力，所以我们只要破坏了病毒的生存环境，就可以彻底防止病毒发生变异和侵入人体

D．病毒很小，也很可怜

The Atlantic Ocean is one of the oceans that separate the Old World from the New. For centuries it kept the America from being discovered by the people of Europe.

Many wrong ideas about the Atlantic made early sailors unwilling to sail far out into it. One idea was that it reached out to “the edge of the world” . Sailors were afraid that they might sail off the earth. Another idea was that at the equator(赤道) the ocean would be boiling hot.

The Atlantic Ocean is only half as big as the Pacific, but it is still very large. It is more than 4,000 miles (6,000 km) wide where Columbus crossed it. Even at its narrowest it is about 2,00 miles (3,200 km) wide.

Two things make the Atlantic Ocean rather unusual. For so large an ocean it has few islands. Also, it is the world’s saltiest ocean.

There is so much water in the Atlantic that it is hard to imagine how much there is. But suppose no more rain fell into it and no more water was brought to it by rivers, it would take the ocean about more than 4,000 years to dry up. On the average, the water is a little more than two miles (3.2km) deep, but in some places it is much deeper. The deepest spot is near Puerto Rico. This “deep” measures 30,246 feet---almost six miles (9.6km).

One of the longest mountain ranges of the world rises from the floor of the Atlantic. This mountain range runs north and south down the middle of the ocean. The tops of a few of the mountains reach up above the sea and make islands.

Several hundred miles eastward from Florida there is a part of the ocean called the Sargasso Sea. Here the water is quiet, for there is little wind. In the days of sailing vessels(船) the crew were afraid they would be becalmed (can’t move) here. Sometimes they were.

Today the Atlantic is a great highway. It is, however, not always a smooth and safe one. Storms sweep across it and pile up great waves. Icebergs float down from the far North across the paths of ships.

We now have such fast ways of traveling that this big ocean seems to have grown smaller. Columbus sailed for more than two months to cross it. A fast modern steamship can make the trip in less than four days. Airplanes fly from New York to London in only eight hours and from South America to Africa in four!

61. What caused people to be unwilling to explore the Atlantic?

A. There were no ships big enough to get across the Ocean.

B. Sailors were afraid of being lost in the Ocean.

C. The Atlantic Ocean was very unusual because it has few islands and the saltiest water.

D. Many incorrect ideas such as “the edge of the world”, “the equator with boiling hot water” made people think the Ocean was full of danger.

62. What is the main idea of the fifth paragraph?

A. How deep the water is.        

B. How to measure the water in the Atlantic.

C. How much water the ocean holds.             

D. How rain affects the Ocean water.

63. What does the underlined word “highway” mean?

A. High road      B. Broad way      C. Fast road           D. Main water way

64. Why does the writer think “this big ocean seems to have grown smaller”?

A. The water in the ocean is becoming less.

B. We have more and more advanced traveling tools now

C. The distance between the ocean and us is shorter.

D. The steamship has a higher speed.

患者，女性，55岁，下班后心悸来诊。护士测量脉搏时，发现每隔2个正常搏动出现1次过早的搏动。考虑此脉搏为（）。

A.心律失常

B.三联律

C.交替脉

D.间歇脉

E.绌脉

地（市）、县级植物检疫机构的主要职责：开展检疫对象调查，编制当地的检疫对象分布资料。负责检疫对象的（）和消灭工作。