【单选题】【消耗次数：1】
When I was a child, I_______go back home on time.
①
have to
②
must
③
had to
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相关题目
【单选题】
Every time when I go back to my hometown, I usually spend two days ____ of my relatives.
①
going the rounds of
②
rounding up
③
making the rounds of
④
rounding on
【单选题】
Tom: It’s the most delicious fruit I have had a long time.
①
I’m so glad you like it.
②
You are not hungry now.
③
I like eating this fruit, too.
④
You should like it.
【单选题】
Please get me a new [填空] when you go back home.
①
clothes
②
dress
③
clothing
④
trousers
【单选题】
When I got up this morning, I felt the temperature had ____.
①
sunk
②
reduced
③
dropped
④
lowed
【单选题】
25. I can’t go—for one thing, I have no money, and ___, I have too much work.
①
what’s more
②
as well
③
for another
④
in addition
【单选题】
I had my meals ______ when I was ill in bed with a bad cold.
①
to bring
②
bring
③
brought
④
bringing
随机题目
【判断题】
假设VAR1和VAR2为字变量，LAB为标号，试指出下列指令的错误之处：①ADDVAR1,VAR2不能都是存储器操作数?②SUBAL,VAR1数据类型不匹配③JMPLAB[SI]LAB是标号而不是变量名，后面不能加[SI]④JNZVAR1VAR1是变量而不是标号?⑤JMPNEARLAB应使用NEARPTR?
①
正确
②
错误
【单选题】
在（）的情况下，系统出现了死锁。
①
某个进程申请了系统中不存在的资源
②
某个进程申请的资源数超过了系统拥有的最大资源数
③
若干进程因竞争资源而无休止地相互等待他方释放已占有的资源
④
硬件故障或程序性错误引起的循环等待
【单选题】
按照PV操作的定义正确的说法是（）
①
调用P操作后进程肯定能继续运行
②
调用P操作后进程肯定阻塞
③
调用P操作后进程可能继续运行或阻塞
④
调用V操作后可能会阻塞