Kiểm tra trực tuyến

1. In a hot, sunny climate, man acclimatizes by eating less, drinking more liquids, wearing lighter clothing, and ________.

• experiencing a darkening of the skin
• his skin may darken
• skin changes that darken
• darkens his skin

2. Modern blimps like the famous Goodyear blimps ________ the first ones in that they are filled with helium instead of hydrogen.

• is different from
• different from
• differ from
• different

3. All of the people at the AAME conference are ________.

• mathematics teacher
• mathematics teachers
• mathematic teachers
• mathematic's teachers

4. ________ techniques have been developed in recent years to diagnose (genetic diseases in the developing fetus.

• They are several
• There are several
• Several
• Several of

5. He entered a university________.

• at the age of sixteen
• when sixteen years were his age
• when he had sixteen years
• at age sixteen years old

6. It is now believed that some damage to tissues may result ________ them to frequent X-rays.

• from exposing
• from exposure
• the exposing
• expose

7. Some of the rainwater from clouds evaporates before ________.

• reach the ground
• to reach the ground
• reaching the ground
• the ground reaches

8. Although the Ojibwa Indians fought frequently with the Sioux, they didn't have ________ with early white settlers.

• many contact
• lots contact
• much contact
• large contact

9. Some forms of mollusks are extremely useful as food, especially the bivalves ________ oysters, clams, and scallops.

• as
• such as
• such
• so

10. Recently, there have been several outbreaks of disease like legionnaire's syndrome, and doctors don't know ________.

• is what the cause
• the cause is what
• what is the cause
• what the cause is

11. Rhododendrons would rather ________ in shady places, and so would azaleas.

• grown
• growing
• to grow
• grow

12. ________ is entirely up to him.

• He travels
• How traveling
• How he travels
• How is he traveling

13. ________ a sizable geographic area, it constitutes a biome.

• A group of plants and animals occupies
• A group of plants and animals occupying
• That a group of plants and animals occupies
• When a group of plants and animals occupies

14. American author John Updike, ________ spent his boyhood in Shillington, Pennsylvania.

• the only child of a high school mathematics teacher
• whom the only child of a high school mathematics teacher
• was the only child of a high school mathematics teacher
• he was the only child of a high school mathematics teacher