什么是数字调制？它与模拟调制相比有哪些异同点？

My School Day in London
Tim Hunt is telling 1 Chinese classmates about his school day in London.
My school day in London is different 2 my school day here in China. School starts 3 nine o’clock. I get up at 7:00 4 weekdays. I go to school 5 underground(地铁). It 6 about forty–five minutes. I have 7 at school. Classes are over at 3:15. It is early, 8 I stay at school and play games 9 my friends. I am 10 the basketball team. We practice(联系)on Monday 11 Wednesday. We have a match 12 Friday afternoon.
On Saturday 13 I get up late. Then I 14 my parents tidy(弄整洁)the house and the garden. In the evening I often go to film or a club(俱乐部).On Sunday I have a good rest and of course, I do 15.

小题1:	A．he B．him C．his D．their

小题2:	A．from B．in C．of D．at

小题3:	A．for B．at C．on D．in

小题4:	A．for B．of C．on D．in

小题5:	A．in B．on C．by D．with

小题6:	A．goes B．stands C．wants D．takes

小题7:	A．breakfast B．lunch C．dinner D．supper

小题8:	A．and B．but C．or D．so

小题9:	A．and B．but C．with D．about

小题10:

A．in B．on C．at D．of

小题11:

A．to B．and C．at D．with

小题12:

A．on B．in C．at D．for

小题13:

A．morning B．afternoon C．evening D．night

小题14:

A．want B．help C．ask D．tell

小题15:

A．my homeworks B．the homeworks C．my homework D．mine homewok