Why doesn’t the woman take the green T-shirt?( )
A.It's too small.
B.It’s too dark.
C.It’s too expensive
第1题:
V.根据所给单词首字母填空。(15分)
A:Jim,__h ____ (36) was your weekend?
B:Great.l went to the beach __w________ (37) my friends and had a barbecue(烧烤)t
(38).
A:That__ s ________ (39) like a lot of fun. Did you _g_______(40) swimming,too?
B:Sure.I think it,s a fantastic(极好) __p ________ (41) to go.
A:I couldn't agree _m______ (42).That’s an ideal place for a __v ________ (43).
B:It __s________ (44)is.
A:I can’t __w ________ (45)to go there myself.
36.________
第2题:
第3题:
在生产者/消费者问题中,用s表示实施互斥的信号量,e表示与缓冲区空闲空间数量相关的信号量,n表示与缓冲区中数据项个数相关的信号量,下列生产者和消费者的操作(生产者和消费者可并发执行),可能产生死锁的是()。
A.生产者:wait(s); wait(e); append(); signal(n); signal(s);消费者: wait(s); wait(n); take(); signal(e); signal(s);
B.生产者:wait(s); wait(e); append(); signal(n); signal(s);消费者: wait(n); wait(s); take(); signal(s); signal(e);
C.生产者:wait(e); wait(s); append(); signal(s); signal(n);消费者: wait(s); wait(n); take(); signal(e); signal(s);
D.生产者:wait(e); wait(s); append(); signal(s); signal(n);消费者: wait(n); wait(s); take(); signal(s); signa
第4题:
It's Sunday morning. Eli and her mother (11) to do the shopping. Her mother wants to buy some food for lunch. Eli wants to buy a new T-shirt and some school things. They come to a new shop.
"What does your shop sell? Eli asks. "A lot of things,"says (12) in the shop.
"You can buy food,drinks, clothes in our shop and school things, too.
Eli and her mother go in. There are lots of people in the shop. Eli wants a T-shirt.
" (13) do you want? ask the girl in the shop.
" T-shirt. "
"Have a look (14) this one. lt-s nice.
"How much is the T-shirt?"
" (15) eighty yuan.
"That's too expensive. Can I find a cheap one?"
"What about the green one? It (16) nice. And it's(17) thirty yuan.
"OK, I’II take it.(18) a lot.
" You ’re welcome.
After that, Eli buys some school things, too.(19) mother buys a lot of food, like bread, cakes, meat and fish.(20) get home very late.
( )11.
A.going
B.go
C.wants
D.walks
第5题:
第6题:
在生产者/消费者问题中,用s表示互斥信号量,e表示空缓冲区资源信号量,n表示满缓冲区资源信号量,下列生产者和消费者的操作(生产者和消费者可并发执行),可能产生死锁的是()。
A.生产者:wait(s); wait(e); append(); signal(n); signal(s);消费者: wait(s); wait(n); take(); signal(e); signal(s);
B.生产者:wait(s); wait(e); append(); signal(n); signal(s);消费者: wait(n); wait(s); take(); signal(s); signal(e);
C.生产者:wait(e); wait(s); append(); signal(s); signal(n);消费者: wait(s); wait(n); take(); signal(e); signal(s);
D.生产者:wait(e); wait(s); append(); signal(s); signal(n);消费者: wait(n); wait(s); take(); signal(s); signa