[填空题]Diamonds which are too flawed to be cut are usually used for ______.

[单项选择]According to the weather forecast, which is usually ______ , it will snow this afternoon.
A. accurate
B. precise
C. exact
D. perfect

[单项选择]
Which is too expensive

[单项选择]

Diving is popular all over the world. It is usually done in the ocean, but divers also explore other bodies of water, including lakes, rivers, and ponds. Snorkeling (戴呼吸管潜泳) on the surface (or just below) is a common form of diving, but many people use scuba (水肺), which stands for self-contained underwater breathing apparatus. Scuba divers carry a tank of air that allows them to breathe while diving underwater.
Throughout history, people have been fascinated by life underwater, and the Professional Association of Dive Instructors (PADI) estimates that there are now 6 million active divers worldwide. They engage in many different types of diving, of which wreck, cave, commercial, and military diving are just a few. The most common form of diving is sport diving, or recreational diving, which is practiced at depths of less than 130 ft (39 m). From these depths, divers can make a straight ascent to the surface. Diving beyond this limit requires advanced training. Because pop
A. Diving (underwater), act of entering water and remaining below the surface to explore, to work, or simply to have fun.
B. Diving (underwater), act of exploring water below the surface.
C. Diving (underwater), act of jumping into the water, the most common form of diving is sport diving, or recreational diving.
D. Diving (underwater), act of going into water and remaining above the surface to explore, to work, or simply to have fun.

[单项选择]Passage 3 A bond is issued by a guarantor, usually a bank or an insurance company, on behalf of an exporter, It is a guarantee to the buyer that the exporter will fulfill his contractual obligations, If these obligations are not fulfilled, the guarantor undertakes to pay a sum of money to the buyer in compensation. This sum of money can be anything from 1% to 100%of the contract value. If the bond is issued by a bank, then exporter is asked to sign a counter indemnity which authorizes the bank to debit his account with any money paid out under the bond. Bonds are usually required in connection with overseas contracts, or with the supply of capital goods and services, When there is a buyer’s market, the provision of a bond can be made an essential condition for the granting of the contract. Middle Eastern countries commonly require bonds , but nowadays many other countries also require bonds, but nowadays many other countries also requite them. Most international aid agencies, such a
A. easier
B. more difficult
C. more happier
D. the same

[填空题]My hair is too long. I want to have it (cut) （）

[单项选择]Your ______ is the round of things that you usually do each day.
A. practice
B. habit
C. routine
D. custom

[填空题]Could you go to bed (early) ______ than you usually do