牛津版高二英语必修5unit3教案

1、牛津版高二英语必修5unit3教案教后记：高考链接拓展阅读Tides(潮汐)are created ainl b the pull f the n n the earth. The ns pull causes w ater in the ceans t be a little deeper at a pint clset t the n and als at a pint farthest fr the n n the ppsite side f the earth. These tw tidalWavesfllw the apparent(明显的) veent f the n arund

2、the earth and strie nearl ever cast line at in- tervals f abut twelve hurs and twent-five inutes. After reaching a high pint, the water level ges dwn graduall fr a little re than six hurs and then begins t rise tward a new high pint. Hence, st cast lines have tw tides a da, and the tides ccur fift i

3、nutes later each da. Differences in the cast line and in channels in the cean btt a change the ties t hat the tidal wave reaches different pints alng the sae cast line. Tne difference in water level between high and lw tide varies fr da t da accrding t the relative psitins f the sun and the n becaus

4、e the sun als exerts a pull n the earth, althugh it is nl abut half as strng as the pull f the n. When the sun and the n are pulling alng the sae line, the tides rise higher, and when the pull at fight angles t ne anther, the tide is lwer. The fratin f the cast line and variatins(变化)in the weather a

5、re additinal factrs which can affect the height f tides. Se sectins f the cast are shaped in such a wa as t cause uch higher tides than are experienced in ther areas. A strng wind blwing tward the shre a als cause tides t be hi gher.1. The height f the tide is affected b all f the fllwing except_.A.

6、 the psitin f the sunB. the directin f the windC. variatins in the cast lineD. channels in the sea btt答案：D 指导：潮汐的高度受太阳、风向和海岸线差异的影响，海沟只影响潮汐的时间。由文中Differencesin channels in the cean btt a change the tie.可知。2. If the pull f the sun equaled the pull f the n, tides wuld_.A. seties be higher than the are

7、nwB. be the sae height as the are nwC. n lnger be affected b the windD. be f equal height all the tie答案：A 指导：太阳对地球的吸引力只有月亮的一半(it is nl abut half as strng as the pull f the n)如果相同并作用在一个方向上，潮汐会比目前高。本题必须正确理解设问的意思3. If ne high tide ccurs at 1: 00 a. . , the next high tide at the sae pint will ccur at abut_.A. 1: 25 a. the sae daB. 1: 00 p. the sae daC. 1: 2