高三英语限时练2(40分钟)

高三英语限时练（40分钟）

（二）

阅读理解 (共两节，满分40分)

第一节(共15小题；每小题2.5分，满分37.5分)

阅读下面短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

A

Humans have been battling viruses since before we had even evolved into our modern form, but we’re a long way from winning the fight against them. Here are a few of the worst killers.

Marburg virus

Scientists identified Marburg virus in 1967, when small outbreaks occurred among lab workers in Germany who were exposed to infected (感染) monkeys. The infected people develop high fevers and bleeding throughout the body. Marburg can be passed on from human to human via direct contact. The death rate is 80% in the 1998—2000 outbreak in Congo and in the 2005 outbreak in Angola.

Ebola virus

The first known Ebola outbreaks in humans struck Africa in Sudan and Congo in 1976. The natural host of Ebola is bats. The virus is spread through contact with infected people or animals. Symptoms include fever, bleeding and organ failure. The death rate is 50% to 70%.

Hantavirus

Hantavirus was first recognized as an infectious disease in the 1950s in Korea. But it first gained wide attention in the U.S. in 1993, when a healthy young man and his fiancée died within days of developing shortness of breath. Hantavirus was isolated (分离) from a deer mouse. More than 600 people in the U.S. are now infected and 36% have died. The virus doesn’t spread from human to human.

Mers-CoV virus

Mers-CoV virus had an outbreak in Asia, Saudi Arabia in 2012 and South Korea in 2015. The virus likely originated in bats. The disease infected camels before passing into humans and causes fever and shortness of breath. It has a death rate between 30% and 40%, making it the most deadly of the known coronavirus (冠状病毒) family. Mers-CoV spreads from one person to another.

1. Which virus caused the highest death rate in a particular area?

A. Marburg virus.

B. Ebola virus.

C. Hantavirus.

D. Mers-CoV virus.

2. What can we know about Hantavirus?

A. It is a type of coronaviruses.

B. It was identified in the 21st century.

C. It was first found in the United States.

D. It only spreads from animals to humans.

3. In what sense are Ebola virus and Mers-CoV virus similar?

A. They may have the same host.

B. They originate in the same continent.

C. They belong to the same virus family.

D. They have exactly the same symptoms.

B

In 2000, when I was seven years old, my family and I were coming back from a T-ball game. In our driveway, we spotted two adult geese and a baby goose. The adults were frightened by our return and flew away, but their baby was still too young to fly. We are no strangers to wildlife, so we avoided physical contact with the baby goose out of fear that it would keep us in its mind and be lost to its family forever.