Kiểm tra trực tuyến

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

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

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

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

3. He entered a university________.

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

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

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

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

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

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

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

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

• such
• as
• so
• such as

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

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

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

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

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

• to grow
• grown
• grow
• growing

11. ________ is entirely up to him.

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

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

• the exposing
• from exposing
• expose
• from exposure

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

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

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

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