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【单选题】
下面四个选项中,均是不合法的用户标识符的选项是A.
float la0 _A
B.
A P_0 do
C.
_123 temp int
D.
b-a goto int
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举一反三
【单选题】There are only _________ new words in the passage, but I know _________ of them. [ ]
A.
some; all
B.
a few; none
C.
lots of; a few
【单选题】There are___new words that all of us can understand
A.
so a few
B.
such a few
C.
so few
D.
such few
【单选题】The first thing ____ you should do is to learn all the new words by heart.
A.
what
B.
that
C.
which
D.
who
【单选题】In the author’s opinion, if you cannot memorize all the new words you are learning, it is because _____.
A.
you are forgetful
B.
you are not working hard enough
C.
you are not interested in memorizing English words
D.
you are trying to memorize too many new words at a time
【简答题】In the author’s opinion, if you cannot memorize all the new words you are learning, it is because _____.A. you are forgetful B. you are not working
hard enough C. you are not
interested in memorizing ...
【单选题】关于数据库应用系统设计，有下列说法： Ⅰ ．数据库应用系统设计需要考虑数据组织与存储、数据访问与处理、应用设计等几个方面 Ⅱ ．在数据库概念设计阶段，当采用自上而下的 E-R 设计时，首先设计局部 E-R 图，然后合并各局部 E- R图，得到全局 E-R 图 Ⅲ ．在数据库逻辑设计阶段，将关系模式转换为具体 DBMS 平台支持的关系表 Ⅳ ．在数据库物理设计阶段，一般需要设计视图和关系模式的完整性...
A.
） Ⅰ 、 Ⅲ 和 Ⅳ
B.
） Ⅰ
C.
） Ⅱ 和 Ⅲ
D.
） Ⅱ 和 Ⅳ
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