题目内容
WeChat Pay makes our lives confident. ______ we want to pay for something, we just need to scan a QR code (扫描二维码).
A. When B. After C. Unless D. Until
根据短文内容完成表格，每空一词。
Most people know what a giraffe looks like. They’re tall, and famous for their long necks that allow them to reach the leaves at the top of the trees that other animals can’t reach. With its 6-foot-long legs and 6-foot-long neck a giraffe can grow over 18 feet tall. That’s almost as tall as a two-floor building! Even a baby giraffe has a long neck and long legs. In fact, a baby giraffe can be feet tall at birth and can stand up in an hour. A giraffe’s heart is also long, with a heart being up to two feet. It takes a strong heart to move blood up the long neck into the brain. The giraffe has special valve(瓣膜) in its blood vessels((血管). These valves prevent blood from rushing to the head when the giraffe bend low to drink. The giraffe must spread its long legs apart so that its long neck can reach the water. Since it can’t protect itself when in this position, it doesn’t drink very often. They wisely choose plants to get water. And speaking of food that a giraffe likes best is the leaves of acacia trees(金合欢树).
The animal with the 1. of “giraffe” | |
a giraffe’s neck and legs | The neck is of the same 2. of the legs. |
A giraffe’s heart | It is strong enough to move blood up to the neck into the 3. . |
A giraffe’s blood vessels | There are special valves in the vessels, which prevent blood from 4. to the head. |
A giraffe’s 5. food | The leaves of acacia trees |