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【单选题】
关于RNA,下列哪种说法是错误的A.
mRNA中含有遗传密码
B.
有mRNA、tRNA和rRNA
C.
rRNA主要存在于细胞核中
D.
rRNA是蛋白质合成的部位
E.
tRNA含有稀有碱基
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举一反三
【单选题】下列叙述中,正确的是______________。
A.
空格的ASCII码值小于英文的大小写字母的ASCII码值
B.
大写英文字母的ASCII码值大于小写英文字母的ASCII码值
C.
大写和小写英文字母的ASCII码值相差的十进制数为1000
D.
标准ASCII码表的每一个ASCII码都能在屏幕上显示成一个相应的字符
【单选题】It was Tom as well as two of his classmates that _______ invited to the party.
A.
was
B.
were
C.
has
D.
have
【单选题】Tom as well as two of his classmates _____invited to the party.
A.
was
B.
were
C.
have been
D.
had been
【单选题】以下哪个是网络钓鱼的例子? (8.1)
A.
设置伪造的 Wi-Fi 热点
B.
建立一个虚假的医疗网站,要求用户提供机密信息。
C.
伪装成公共事业公司的员工以获取这个公司安全系统的信息。
D.
以虚假的借口发送大量电子邮件,请求资助。
【单选题】Tom as well as his two companions ________ leave ________Paris tomorrow.
A.
are to; for
B.
is to; for
C.
is to; to
D.
are to; to
【单选题】Tom as well as his two friends .
A.
are worthy of teaching
B.
are worth to teaching
C.
are worth teaching
D.
is worth teaching
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