3.The underlined words "these years" in Paragraph 3 refer to the years when the author _______.

A.was ill B.started his career

C.cleared up his affairs D.struggled to go back to his work

4.By fighting with his disease, what did the author realize?

A.Patients should know how to get on with doctors.

B.Doctors should treat patients more carefully.

C.We should pay enough attention to diets.

D.We should value and appreciate life.

3、Is There Life on Earth

There was great excitement on the planet of Venus this week. For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.

The satellite was directed into an area known as Manhattan(named after the great Venusian astronomer Prof. Manhattan, who first discovered it with his telescope 20,000 light years ago). Because of excellent weather conditions and extremely strong signals, Venusian scientists were able to get valuable information as to the feasibility(可行性)of a manned flying saucer(飞碟)landing on Earth. A press conference was held at the Venus Institute of Technology.

"We have come to the conclusion, based on last week's satellite landing," Pro. Zog said, "that there is no life on the Earth."

"How do you know this?" the science reporter of the Venus Evening Star asked.

"For on thing, Earth's surface in the area of Manhattan is composed of solid concrete and nothing can grow there. For another, the atmosphere is filled with carbon monoxide and other deadly gases and nobody could possibly breathe this air and survive."

"What does this mean as far as our flying saucer program is concerned?"