編輯推薦：2021年上半年公共英語三級閱讀理解練習題匯總

Apples have become the latest controversial entry into the genetically modified food debate, following a July 12 New York Times piece written by Andrew Pollack. Okanagan Specialty Fruits, a small British Columbia company, wants to start marketing a non-browning apple, and it has applied for approval in Canada and in the United States.

The Arctic apple, available so far in the Golden Delicious and Granny Smith varieties, contains an extra copy of a gene which interferes with the enzymatic activity that causes browning. The enzyme is polyphenol oxidase.

According to Neal Carter, founder and president of Okanagan Specialty Fruits, the non-browning Arctic apple is just what consumers are looking for. A whole apple, he tells the Times, is “for many people too big a commitment,” and apple slices that have browned just aren’t appetizing. (What a burden we bear — to have to eat a whole apple, let alone an unsightly one.)

Carter suggests that it is merely a cosmetic change intended to encourage people to eat more apples. But it’s more than that, of course.

It is intended “to turn the apple into an industrialized product,” said Lucy Sharratt, coordinator of the Canadian Biotechnology Action Network, as reported in the Times. In Common Ground, a Canadian monthly magazine dedicated to health, wellness and ecology, Yukon farmer Tom Rudge says, “We should eat real food instead of genetically engineering an apple so companies can slice it, wrap it in plastic and truck it across the country.” Organic apple farmer Harry Burton of Salt Spring Island sees it as “an indication of our distancing from nature.”

As Pollack reports, the U.S. Apple Association opposes the introduction of the Arctic apple, but not out of any objection to genetic engineering. In fact, they declare on their website that “in order to continue discovering new and valuable benefits from apples, U.S. Apple supports advancements from technology and genetics and genomics research.” The problem for U.S. Apple, Pollack writes, is that the non-browning Arctic apple “could undermine the fruit’s image as a healthy and natural food, the one that keeps the doctor away and is as American as, well, apple pie.”

1. As to the Arctic apple, which of the following statements is wrong?

A. It will not turn brown.

B. There is no enzymatic activity in its body.

C. It is a kind of genetically modified food.

D. The enzymatic activity that causes browning has been reduced.

2. According to Neal Carter, ( )

A. The non-browning Arctic apple is very popular among consumers.

B. A new type of smaller apple will be developed to meet the demand of some consumers.

C. The color of apples has nothing to do with one’s appetite.

D. The non-browning Arctic apple is more nutritious than other varieties.

3. From what the organic farmers said, we know that it is undesirable to ( )

A. eat real food instead of genetically modified food.

B. attach more importance to industry than to agriculture.

C. cultivate farm products in an industrialized way.

D. be close to nature.

4. Why is the U.S. Apple Association against the introduction of the Arctic apple?

A. Because it is against genetic engineering.

B. Because it cannot benefit from this kind of apple.

C. Because this kind of apple will undermine the fruit’s image as a healthy and natural food.

D. The reason is not mentioned in the passage.

參考答案：

1. B

本題問的是錯誤的選項。根據第二段可知，北極蘋果(Arctic apple)含有一種額外的基因，能夠干擾導致蘋果變成褐色的酶的活性，但并非在這種蘋果體內沒有酶的活動，所以選B。

2. A

根據第三段第一句話(…is just what consumers are looking for…)可知，這種不會變成褐色的蘋果在顧客中是很受歡迎的，所以選A。

3. C

根據第五段可知，這些農民反對將農產品的生產工業化，所以選C。

4. D

根據最后一段可知，美國蘋果協會反對引入這種品種，但并沒有反對基因工程，也沒有說明反對引入這種品種的原因，所以選D。

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