中文字幕在线一区二区在线,久久久精品免费观看国产,无码日日模日日碰夜夜爽,天堂av在线最新版在线,日韩美精品无码一本二本三本,麻豆精品三级国产国语,精品无码AⅤ片,国产区在线观看视频

      英語閱讀強化訓練

      時間:2024-07-06 04:22:26 英語閱讀 我要投稿

      英語閱讀強化訓練

        Keep your eyes on the sky ― it looks like 200x will be a big year for tornadoes. As of the first week in April, there have already been 445 “twisters” in the United States. Last year, there were only 96 tornadoes by the beginning of April. According to the National Oceanic and Atmospheric Administration (NOAA), a government agency that studies the environment, this marks the most intense tornado activity in the first three months of any year since 199x. Previous years with a busy start have produced high numbers of tornadoes throughout the year.

      英語閱讀強化訓練

        For those living in “Tornado Alley” from west Texas all the way up to North Dakota, springtime is tornado time. What exactly causes a “twister”? Tornadoes form when moist, warm air is caught under dry, cool air. When the warm air rises, it upsets the cool air, spinning (使快速旋轉) the air into a funnel-like shape. The spinning air is officially categorized as a tornado once it touches the ground. These twisters can reach extremely high speeds, sometimes more than 250 miles per hour!

        Scientists try to measure the speed and damage of tornadoes using what is called the Fujita Scale, or F-scale. The scale ranges from F0, with winds under 73 mph, to F5, with winds between 261 and 318 mph. Violent tornadoes in the F4 and F5 categories sometimes last more than an hour, and cause incredible amounts of damage, often destroying everything for hundreds of miles. Fortunately, these account for less than 1 percent of all tornadoes.

      【英語閱讀強化訓練】相關文章:

      英語閱讀的強化訓練:Specialguides07-20

      高考英語閱讀理解的強化訓練01-10

      中考英語閱讀理解強化訓練08-13

      高考英語沖刺復習:閱讀強化訓練07-14

      MPA考試英語閱讀理解強化訓練01-11

      MPA考試英語閱讀理解強化訓練試題01-11

      初中英語閱讀理解強化訓練09-22

      初中英語閱讀理解強化訓練及答案09-05

      英語六級閱讀強化訓練題答案講解09-11

      2016年公共英語考試四級閱讀強化訓練題10-17

      主站蜘蛛池模板: 南乐县| 欧洲一级无码AV毛片免费| 日韩精品视频在线观看免费| 国产日产久久福利精品一区| 中文字幕乱码免费人妻av | 超高清丝袜美腿视频在线| 黄平县| 国产精品污一区二区三区 | 欧亚精品无码永久免费视频| 国产成人AV乱码免费观看| 久久人成免费网站小草| а的天堂网最新版在线| 美姑县| 国产精品欧美成人片| 亚洲人妻中文字幕在线视频| 无码av专区丝袜专区| 国产成社区在线视频观看| 日韩偷拍视频一区二区三区| 亚洲综合精品在线观看中文字幕| 新野县| 白城市| 霍林郭勒市| 青浦区| 江山市| 国产美女丝袜高潮白浆| 垦利县| 锡林郭勒盟| 巴林左旗| 无码熟妇人妻AV不卡| 男女好痛好深好爽视频一区| 亚洲高清一区二区三区在线观看| 监利县| 国产chinese在线视频| 阳曲县| 亚洲专区中文在线第一页| 亚洲区福利视频免费看| 国产精品专区一区二区av免费看| 视频一区二区三区中文字幕| 久久久久亚洲AV片无码乐播| 国产精品无码mv在线观看| av福利免费在线观看网站|