1.
Millions of people die of hunger in southern Africa every year,but when Zambia (贊比亞) was offered thousands of tons of free maize(玉米)by the U.S.A.,the government politely said no"We don't know whether the food is safe,"said Zambia's commerce,Trade and Industry Minister Dipak Patel.
His worries are shared by countries around the world that are in two minds about America's genetically modified(GM,轉(zhuǎn)基因的)crops.Just last week,European Union member nations were discussing whether or not to import GM sweet corn from the US.
Ever since people started farming,they have tried to crossbreed(雜交)plants to make them stronger or better tasting.At one time,only related plants could be crossed with each other.
But when GM techniques were developed in the 1970s,scientists were able to put a single gene from a living creature into an unrelated creature.
This means they can make crops more productive and resistant to disease by adding genes from other species.They can also create food with special characteristics,such as"golden rice",which is rich in vitamin A.But many people believe GM foods are a health risk.
At the moment,the official argues that GM foods"are not likely to have an impact on human health".But there are still many questions to be answered as the foods are produced in different ways.
Some experts believe the genetic material added to plants can be absorbed by humans and do damage to our bodies.Further harm could be caused by the genes from GM plants crossbreeding with naturally produced crops.
People in China are also getting worried about GM foods.More than 70percent of the country's soybean oil is produced from imported GM soybeans.Meanwhile,a survey last November found that 12of 60famous foods sold across the country were GM products.The government has begun to introduce a marking system (標記系統(tǒng)) for GM goods so that people can choose whether or not to eat them.
61.What can be the best title of the passage?B
A.GM foods in the world
B.GM foods,health risk?
C.The techniques of GM foods
D.Problems of GM foods
62.The underlined sentence in Para.2probably means that.C
A.Zambia and many other countries shared the free maize from the U.S.A.
B.GM food is better than naturally produced foods.
C.Besides Zambia,many countries worldwide are worried about the safety of GM foods
D.Many countries are worried about the GM techniques.
63.According to the passage,GM crops areD
A.less productive
B.rich in Vitamin B
C.strange tasting
D.not easily affected by diseases
64.Which of the following statement is NOT True?A
A.EU member nations have already imported GM sweet corn from the US.
B.Some experts believe genetic material from GM foods can do damage to human bodies.
C.Zambia has refused the American free maize because of the safety of GM food.
D.More than 70percent of China's soybean oil is produced from imported GM soybeans.
65.Where can we read the passage?C
A.In a travel magazine
B.In a textbook
C.In a newspaper
D.In a medical report.