题目

为探究草履虫对刺激的反应，某同学制作了下图的临时装片，观察草履虫的运动方向，发现草履虫（ ）A.从右向左运动 B.从左向右运动 C.来来回回运动 D.不运动 答案：【答案】A【解析】通过显微镜观察到草履虫能通过运动趋向有利刺激，躲避有害刺激。草履虫能通过运动趋向有利刺激，躲避有害刺激。图中在左侧液滴中放入牛肉汁，会使液滴中盐的浓度下降，是有利刺激。所以草履虫会通过运动趋向它，应该从右向左运动。故选：A。 　　Suppose you work in a big firm and find English very important for your job because you often deal with foreign businessmen．Now you are looking for a place where you can improve your English,especially your spoken English． 　　Here are some advertisements about English languagetraining from newspapers． 　　You may find the information you need． (1) You work from 9∶00 am to 4∶00 pm every day．Which schools will you choose? [　　] A． Global English Center and Modern Language school． B． Global English Center and the International House． C． Modern Language School and the 21 st Century． D． The 21 th Century and the International House． (2) The 21 st Century is different from the other three schools in that ________ [　　] A． its teaching quality is better B． it is nearest to the city center C． its courses are more advanced D． it requires an entrance examination (3) You will probably prefer to go to the International House because it ________ [　　] A． offers free sightseeing and social activities B． has special course in spoken English C． costs less than the other schools D． has native English teachers (4) if you take the evening programme at the International House,you will pay about ________ [　　] A． 60 yuan B． 240 yuan C． 720 yuan D． 960 yuan