首页
题目
学科
试卷
登入
注册
首页
题目
详情
He _________ Shanghai on business for two months.
单选题
2019-05-03 13:43:02
0
184
A.went to
B.has gone to
C.has been
D.has been to
参考答案:……
查看答案
参考答案
科目:
0002 英语
学科:
未分类
感兴趣题目
As we know,England is ______ European country and Singapore is ___ Asian country.
Many childless couples ________ children.
Please find out when the train _______ Beijing.
The true artist lets nothing __________ between himself and his work.
His feelings of ________ increased with time.
Although this village isn’t big, all the other villages I _________ so far are smaller.
It’s dangerous to swim in a ________ river.
They were poor, and his father had a hard time ________.
A few hundred years ago news did not ________.
He’s amazingly cheerful considering all that he’s ________.
_____ are widely used in the current world.
She wrote back to him ________ she received his letter.
相关题目
算法分析的两个主要方面是时间复杂度和空间复杂度的分析。
个体心理从动态到稳态的顺序排列,下列排列正确的是
[含图片]
Once bitten, twice shy.
将0.50mol/LBa2 和0.10mol/LNa:2SO4等体积混合时,加动物胶凝取(pKa1=2.0,pKa2=9.0),这时沉淀酸度应选择
在pH=5.0的醋酸缓冲溶液中用0.002mol/L的EDTA滴定同浓度的溶液中Pb2 。已知lgKPbY=18.0,lgαY(H)=6.6,lgαPb(Ac)=2.0,在计量点时,溶液中pPb
偶然误差正态分布曲线的两个重要参数是
计算BaSO4在pH=10.0,含有0.01mol/L EDTA溶液中溶解度(pKsp(BaSO4)=9.96,lgKBaY=7.86,pH=10时,lgαY(H)=0.45)。
同样进出口温度情况下,( )平均温度差最大。
若函数f在数集D上的导函数处处为零,则f在数集D上恒为常数。
storage register
化学教学要有艺术是否就一定意味着化学教学必须标新立异,独树一帜,打破常规,甚至不按常理,否则就不具有教学艺术?
两个直径相差甚微的圆柱体夹在两块平板玻璃之间构成空气劈尖,如图所示,单色光垂直照射,可看到等厚干涉条纹,如果将两个圆柱之间的距离L拉大,则范围内的干涉条纹 [含图片]
下列哪一项不属于教学传播的基本规律?
调节视频展示台的光圈大小的主要作用是调整投影至银幕上的影像大小。
这里可作为广告区域
专业远程教育题库
微信扫码关注 无忧题库 公众号