Look! There is ________ cat in the tree.

题型:选择题

问题:

Look! There is ________ cat in the tree. [ ]

A. a

B. an

C. the

D. /

考点:不定冠词(a,an)
题型:选择题

测量病人体温,观察其是否正常,应选用(    )统计图比较恰当。

题型:选择题
一直升飞机停在南半球的地磁极上空.该处地磁场的方向竖直向上,磁感应强度为B.直升飞机螺旋桨叶片的长度为l,螺旋桨转动的频率为f,顺着地磁场的方向看螺旋桨,螺旋桨按顺时针方向转动.螺旋桨叶片的近轴端为a,远轴端为b,如图所示.如果忽略a到转轴中心线的距离,用ε表示每个叶片中的感应电动势,则(  )

A.ε=πfl2B,且a点电势低于b点电势

B.ε=2πfl2B,且a点电势低于b点电势

C.ε=πfl2B,且a点电势高于b点电势

D.ε=2πfl2B,且a点电势高于b点电势

题型:选择题

补写出下列名篇名旬中空缺部分。(任选3个小题 )

(1)小学而大遗,_____________。(韩愈《师说》)

  _____________,抱明月而长终。(苏轼《赤壁赋》)

(2)或因寄所托,_____________。(王羲之《兰亭集序》)

  酌贪泉而觉爽,_____________。(王勃《滕王阁序》)

(3)_____________,小人之交甘若醴。(《庄子?山木》)

  _____________,自在娇莺恰恰啼。(杜甫《江畔独步寻花》)

(4)_____________,小人长戚戚。(《论语?述而》)

  祸兮福之所倚,_____________。(《老子》)

题型:选择题

下图是我国部分地区略图,据图及结合所学知识回答下列问题。

(1)京九铁路位于                 铁路和                铁路两大铁路干线之间。该线与长江的交点是                

    (城市),此城市附近有湖                (名称)。该线与陇海铁路线交点是                  (城市),该

    城市位于                 省(名称)。

(2)京九铁路建设的主要区位因素有:

    ①                                                                                                                                

    ②                                                                                                                                 

    ③                                                                                                                                 

    ④                                                                                                             

(3)图中A和B两地分别建有我国两个大型钢铁企业,影响两地该工业布局的最主要区位因素分别为:

    A____________________________                                                                                                     

    B___________________________                                                                                                       

(4)C城市兴起的最主要区位因素是_______________                                                                          

(5)图中甲、乙两个阴影所在地区商业网点的显著差异是:

    甲                                                                                                                                                     

    乙                                                                                                                                                     

    原因是 __________________________________________________                                                        

                                                                                                                                                                

                                                                                                                                                             

(6)试分析B港口成为我国最大港的主要区位因素。

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

题型:选择题

下列关于奥美拉唑的叙述中,错误的是

A.兴奋胃壁细胞H+

B.只能口服给药

C.抑制胃酸作用强,但持续时间短

D.对胃壁细胞上组胺,促胃液素和M胆碱均有抑制

E.治疗消化性溃疡病复发率低

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