Kiểm tra trực tuyến

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

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

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

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

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

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

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

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

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

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

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

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

7. He entered a university________.

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

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

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

9. ________ is entirely up to him.

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

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

• such as
• such
• as
• so

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

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

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

• growing
• to grow
• grown
• grow

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

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

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

• from exposure
• the exposing
• from exposing
• expose