30. The giant panda is an ________ .
| A．endanger species | B．endangered specie | C．endangering species | D．endangered species |
Although the tradition of drinking tea dates back to more than 3,000 BC in China, it was not until the mid 17'th century in the UKappeared the concept of "afternoon tea".
| A．when | B．where | C．that | D．which |
Tian'anmen Square is the largest square in the world, which covers a total area of 440,000 square meters,880 meters north to south, and 500 meters east to west.
| A．measured | B．to measure |
| C．being measured | D．measuring |
What would happen to the earth if the sun suddenlyswitch off some day?
| A．might | B．could | C．would | D．should |
Despite its little nutrition, the instant noodle is delicious and a hunger killer, so it__________since its birth.
| A．is developed | B．develops |
| C．had developed | D．has been developing |
Distance education programsthe disadvantages of limited time, distance or physical disability, so they are becoming more and more popular all over the world.
| A．come up with | B．consist of |
| C．account for | D．make up for |