【单选题】【消耗次数：1】
I haven’t finished my composition . I________ for two hours and a half.
①
have written it
②
have been writing it
③
wrote it
④
am writing it
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相关题目
【单选题】
I haven’t finished my composition . I ________ for two hours and a half.
①
have written it
②
have been writing it
③
wrote it
④
am writing it
【单选题】
I haven’t finished my composition. I ___ for two hours and a half.
①
?have written it
②
?have been writing it
③
?wrote it
④
am writing it
【单选题】
I often ______ the cooking for my family, but recently I have been too busy to do it.
①
will do
②
do
③
am doing
④
had done
【单选题】
I have been looking forward to ____ from my parents.
①
：hear
②
：being heard
③
：be heard
④
：hearing
【单选题】
（ ） he finished writing the composition in such a short time surprised us all.
①
What
②
How
③
That
④
If
【单选题】
I am ____ grateful for the many kindnesses you have
shown my son.
①
excessively
②
much
③
certainly
④
exceedingly
【单选题】
The reason _________ I am writing this letter is to tell you about the meeting on Saturday.
①
because
②
why
③
for
④
as
【单选题】
I haven’t read ____ of his books, but judging from the one I have read I think he’s a very promising writer.
①
any
②
none
③
both
④
either
随机题目
【单选题】
以下关于显卡描述错误的是（ ）
①
显卡主要部件是GPU，它是一个非常复杂的超大规模集成电路
②
没有显卡，计算机就无法输出显示信号给显示器
③
显卡主要是进行显示信号的数模转换，图像渲染等都是CPU完成，跟显卡关系不大
④
大型3D游戏需要比较高级的显卡支持才能获得流畅的画面和高质量显示效果
【单选题】
关于荨麻疹患者的用药注意事项和患者教育，错误的是（ ）。
①
宜清淡饮食
②
服用氯苯那敏后禁止开车
③
瘙痒时可以用热水洗烫
④
暂停使用肥皂
⑤
伴有血管性水肿的荨麻疹患者，可选用赛庚啶
【单选题】
I型糖尿病的特点为（）。
①
多数人肥胖或超重、食欲好、精神体力与正常人并无差别
②
患者胰岛功能基本丧失，需要终生应用胰岛素替代治疗
③
起病隐匿、缓慢
④
随着病程延长，可出现糖尿病慢性并发症
⑤
一般有家族遗传病史
【单选题】
预防佝偻病需补充维生素D和钙剂，其中维生素D的预防或治疗剂量根据生理状况会有不同需求。正常18岁以下儿童每日需补充的维生素D剂量是（）。
①
200IU
②
400IU
③
800～1000IU
④
2000～4000IU
⑤
15万～30万IU