国家开放大学23秋学期理工英语4单元自测7【标准答案】

单元自测7（10分）
试卷总分:100 得分:100

一、挑选填空：阅览下面的对话或语句，从A、B、C三个选项中选出一个能填入空白处的最好选项。

1.— So how can we buy safe food?

—??????????????????????.
A.The higher the price, the safer the food
B.We can plant vegetables and fruits by ourselves
C.When we choose food, we must remember to check its tag, confirming whether the basic information is marked on it

2.—?What is U.S’s?experience?in food safety management?

—??????????????????????.
A.S. do better in this point
B.They are improving the legal system all the time and very strict in law enforcement
C.Some illegal traders care about nothing but making money

3.—?I think the other reason can be identified from the industrialization of food production.

—?????????????.?Some illegal traders care about nothing but making money.?
A.That bothers me too
B.I sincerely hope that the whole society pay much more attention to food safety
C.Yes, you bet

4.The technology has several advantages?????????earlier attempts to engineer meat?in vitro?.
A.in comparison of
B.in comparison to
C.compare with

5.? ? ??people are no longer worried about whether their food is safe or not??????they enjoy a better life.
A.Only if……can
B.If only ……can
C.What if……can

6.二、阅览了解：阅览下面的短文，依据文章内容从A、B、C三个选项中选出一个最好选项。

（教材课文原文）

1 2050, the world\'s population 2 to rise to 9 billion from just over 7 billion currently. Proponents of genetically modified foods say they are safe and can boost harvests 3 in bad conditions by protecting against pests, weeds and drought. This, they argue, will be essential to meeting the needs of a booming population in decades to come and avoiding starvation.

4 Doug Gurian-Sherman, senior scientist for the food and environment program at the Union of Concerned Scientists, an advocacy group, said genetic engineering for insect resistance has provided only a modest increase in yields since the 1990s and drought-resistant strains have only 5 reduced losses from drought.
(1).__1__
A.By
B.In
C.Until
(2).__2__
A.projected
B.is projected
C.has been projected
(3).__3__
A.even though
B.even
C.though
(4).__4__
A.Furthermore
B.Moreover
C.However
(5).__5__
A.modestly
B.modest
C.moderate