Americans eat ______ vegetables per person to...

Americans eat ___ vegetables per person today as they did in 1910.

A. more than twice　　　 B. as twice as many

C. twice as many as　　 D. more than twice as many

高一英语单项填空中等难度题查看答案及解析

Americans eat____ vegetables per person today as they did in 1990.

A. more than twice                    B. as twice as many

C. twice as many as   D. more than twice as many

高一英语单项填空中等难度题查看答案及解析

Americans eat ______ vegetables per person today as they did in 1990.

A. more than twice　　　　　　　 B. as twice as many

C. twice as many as　　　　　　 D. more than twice as many

高一英语单项填空中等难度题查看答案及解析

Americans eat ________ vegetables per person today as they did in 1910.

A. more than twice                        B. as twice as many

C. twice as many as                        D. more than twice as many

高一英语单项填空中等难度题查看答案及解析

Americans eat ________ vegetables per person today as they did in 1970.

A. more than twice　                        B. as twice as many

C. twice as many as                        D. more than twice as many

高一英语单项填空中等难度题查看答案及解析

Americans eat _______________ vegetables per person today as they did in 1910.

A．more than twice                                  B．as twice as many

C．twice as many as                                                                D．more than twice as many

高一英语单项填空中等难度题查看答案及解析

Americans eat ______ vegetables each person today as they did 20 years ago.

A. more than twice

B. as twice as many

C. twice as many as

D. more than twice as many

高一英语单项填空中等难度题查看答案及解析

Americans eat _______ vegetables each person today as they did 20 years ago..

A. twice as many   B. many as twice  C. as many twice      D. as twice many

高一英语单项填空中等难度题查看答案及解析

You know eating fruit and vegetables is helpful. But did you know it can also make you look good?

People who increased their intake over just six weeks developed a healthy glow and appeared more attractive, researchers found.

Scientists at St Andrews University found eating them subtly increased yellow and red pigments in the volunteers’ skin.

They monitored the food intake of 35 people and took pictures of their faces, arms and hands using a sensitive camera at the start, and after three and six weeks.

Increasing their intake of greens by 2.9 portions a day was found to make the person look healthier and an extra 3.3 portion could enhance their attractiveness, when their photographs were rated by others.

Fruit and vegetables are rich in carotenoids（类胡萝卜素）, which are known to protect against cell damage from pollution and UV rays, and can also prevent age-related diseases including heart disease and cancer.

But while it was known eating extreme amounts of certain vegetables such as carrots could turn skin orange, it was not known a small increase was perceptible to others and was seen as appealing.

A camera measured changes to the skin’s redness, yellowness and lightness, and found it significantly changed in people who naturally increased their intake. These changes were not evident at three weeks.

Using light sensors, the researchers showed these red and yellow hues(色调，色相) were linked with the levels of carotenoids in their skin.

There are hundreds of carotenoids but those thought to have the most dramatic effect are lycopene（番茄红素）which gives tomatoes and red peppers their red color - and beta-carotene found in carrots as well as broccoli, squash, and spinach.

Skin color is also affected by chemicals called polyphenols(多酚), found in apples, blueberries and cherries, which cause blood rush to the skin surface.

1.From Paragraph 4, we learn that pictures were taken ______.

A. three times using a special camera every three weeks

B. twice using a sensitive camera every six weeks

C. by 35 people when they ate fruit and vegetables

D. by 35 people while being monitored to compare the changes

2.The word “appealing” (Paragraph 7) can best be replaced by ______.

A. frightening　　 B. harmful

C. dangerous　　 D. attractive

3.The red and yellow colors were related to _______ in their skin.

A. the contents of intake　　 B. the levels of carrots

C. the time of eating fruit and vegetables　　 D. the amount of carotenoids

4.Among hundreds of carotenoids, which are most effective? ________

A. tomatoes and red peppers　　 B. squash, and spinach

C. lycopene and beta-carotene　　 D. heir red colour and beta-carotene

5.The purpose of the article is to _______.

A. tell people a new discovery　　 B. advise people to eat more fruit and vegetables

C. introduce a way to protect skin　　 D. list the functions of carotenoids to skin

高一英语阅读理解困难题查看答案及解析

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1. What made “I” finally think of getting a cell phone?

A．Being stuck by the highway.

B．Being urged by his grandkids.

C．Being persuaded by cell phone salespersons.

D．Being attracted by the friendly return policy.

2. On the monthly basis of 100 minutes, the Jitterbug weekly rate is about _______.

A．$3.75            B．$4.99             C．$14. 99           D．$19.99

3. An advantage of Jitterbug mentioned in the passage is _______.

A．its discount price with a free gift

B．its reasonable rate plans without a contract

C．its good customer service all over the world

D．its “global-positioning” system with 911 access

4. The main purpose of the passage is to _______.

A．tell a customer's story of Jitterbug

B．provide two ways to order Jitterbug

C．give a brief introduction of Jitterbug

D．attract potential customers to Jitterbug

高一英语阅读理解中等难度题查看答案及解析