三级跳远的三跳分别称为什么？
参考答案：
“单脚跳”、“跨步跳”、“跳跃”。
–Has your father returned from Africa yet?
–Yes, but he _____here for only three days before his company sent him to Australia.
A．has been
B．will be
C．would be
D．was
"128M内存"指的是计算机的
A．CPU
B．ROM
C．RAM
D．CACHE
E．FLOPPYDISK
