问题
判断题
鸟类胸骨中线处都有高耸的龙骨突。（）
答案
参考答案：错
解析：改为“鸟类胸骨中线处有高耸的龙骨突，不善飞的鸟类（如鸵鸟）一般扁平”。
搜题请搜索小程序“爱下问搜题”
鸟类胸骨中线处都有高耸的龙骨突。（）
参考答案：错
解析：改为“鸟类胸骨中线处有高耸的龙骨突，不善飞的鸟类（如鸵鸟）一般扁平”。
| 短文填空。 | |
 nd reading e-mail have become one of the most popular daily activities around the world, either for business or for pleasure. Now, more and more teachers and students are __1__ this form (形 式) of communication to __2__ their language skills, particularly in English. E-mail has become so popular because it's quite __3__. In the past, teachers often __4__ pen pal projects so that their students could __5__ ideas with their pen pals. But sending and __6__ paper letters could take a few weeks sometimes, so students might lose __7__ in the project some day. Now with e-mail, __8__ , messages can be sent or received __9__ on the Internet. __10__ of waiting for days or weeks, students can receive a reply during days, hours, or even minutes. |