unit2-reading
Part 1 Cloze (with no choices provided)
(每小题：分)
Directions: Fill in each of the following blanks with one word. In each case, use the exact word that appears in your textbook. Questions 1 to 10 are based on the following passage.
"Select breads and cereals with the words 'iron-added' 1.
"This added iron supplements the small amount that naturally occurs
in grains. Eat these foods 2.
example, drink orange juice with cereal or put a tomato 3.
4.
of iron absorbed." Clark also recommends 5.
iron pans, as food can 6.
the cooking process. "The iron content of tomato sauce cooked in an iron pot for three hours showed a striking increase, the level going up nearly 30 times," she writes. And people who are likely to have low iron
should avoid 7.
since 8.
being absorbed 9.
"Active women need to be a lot more careful about their food choices,"
sums up Purdue's Lyle. "If you pay attention to warning signs before
iron reserves are 10.
deficiency before it really becomes a problem."
Part 2 Skimming and Scanning (Multiple Choice + Blank Filling)
(每小题：分)
Directions: Read the following passage and then answer the questions. For questions 1-7, choose the best answer from the four choices marked A, B, C and D. For questions 8-10, complete the sentences with the information given in the passage.
Questions 1 to 10 are based on the following passage.
Engineers of the Woods
In the forests of North America, where the winters are often long and cold, small lakes can be found along the streams. Sometimes these lakes are natural, sometimes they are man-made, and sometimes they are the constructions of beavers (海狸). You can tell a beaver lake by its dam. To make the dams, the beavers lay sticks and branches on top of each other to form an effective barrier against the water of the stream. Near the dam the beavers lay sticks and branches. Usually this barrier is similar to a small island in a lake. This is the house where a beaver family spends the winter, protecting themselves from enemies and from the cold. The beavers are able to keep dry in the center of the house, which is above water level. The beavers work hard to make their house. They cut down trees, gather branches and put them together with mud. Most of the summer is spent on this kind of work, but in winter the beavers' work pays off. Their house protects them from bears as well as the cold.
The beaver is related to animals such as rats and mice. The beaver, however, is much bigger than his relatives. An adult beaver may weigh more than 50 pounds, and his body may be about three feet long. His tail will add ten to twelve more inches to his length. His back feet are webbed, which help him swim rapidly. His front feet are similar to a pair of strong hands. With them he can carry wood and stones. His eyes, nose and ears are small, but he has two huge front teeth. These teeth are always growing, and he must keep them sharp by constant use. The teeth of an adult beaver are yellow from the bark of trees that he bites.
Men attach great value to the beaver because beavers can be sold to make expensive clothing. Beavers have almost disappeared from Europe because trappers (设阱捕兽者) have killed so many of them. Beavers might easily have become extinct in America, too, but laws were passed to protect them before they were all killed.
The beaver likes family life, and lives with the same mate all his life. Several young—usually two to five—are born every year. The little beavers stay with their parents for two years before mating and setting out on their own. They share the work of building dams, constructing homes and raising the young.
When there are too many beavers in one place, some of them will group together in another place. They usually choose a spot near some fairly deep
