不同时到达间隔时间(τ不)
参考答案:
在单线区段,两个相对方向的列车在车站交会时,从某一方向的列车到达车站时起,至相对方向列车到达或通过时止的最小间隔时间称τ不
1141年后,我国北方经济逐渐恢复,南方经济得到发展。这主要是因为
A.南宋与金订立了和约
B.宋辽议和
C.北宋陆续消灭了各地的割据 * *
D.经济重心的南移
句型转换。(共15分,每小题3分)
1.I have a cold.(就画线部分提问)
you?
2. My father does exercise every morning.(用be going to改写句子)
My father is ________ exercise tomorrow morning.
3. They have to get up early every day.(改为一般疑问句)
_______they _______ _______ get up early every day?
4. Lucy got to Beijing yesterday.( 改为同义句)
Lucy Beijing yesterday.
5. There will be a school sports meet next week .(改为否定句)
a school sports meet next week.