A tornado(龙卷风)is a windstorm. It is__(1)__ strong that no one__(2)__ tell how __(3)__ the winds blow. Some of the winds may__(4)__ about four hundred and eighty kilometers (about three hundred miles) an hour. Tornado winds __(5)__ fast, __(6)__ they do not ...
【题目】A tornado(龙卷风)is a windstorm.It is_(1) strong that no one_(2) tell how(3) the winds blow. Some of the winds may_(4) about four hundred and eighty kilometers (about three hundred miles) an hour.T ornado winds _(5) fast, _(6they do not last very long. As they ...
If they are strong enough, a vortex of air can develop just like a vortex of water forms in a sink. This precursor to the tornado is called a mesocyclone, and it is typically 2 to 6 miles (3 to 10 kilometers) wide. Once a mesocyclone forms, there's a roughly 50 percent chance ...
The conditions that may give rise to one tornado won't necessarily cause another.我们所了解的形成龙卷风的条件，即使都满足，也不一定会形成另一次龙卷风。But we have learned a lot since people first started recording tornadoes, like how to recognize the signs when one is brewing in the sky.但是...
A PDS tornado watch means that conditions are favourable for storms to produce multiple strong, long-lived tornadoes. A PDS severe thunderstorm watch means that folks in harm’s way can expect a high-end derecho, or a long-live...
Today we have a topic about how to protect yourself when a tornado(龙卷风;大雷雨) is coming. That is to say, if a tornado is coming, what would you do? OK, let me tell you. If you are in your house, you should: Keep your eyes on the sky for signs of a possible tornado and ...
1. How close parents are to their children has a strong influence(用适当的单词填空) the develop-ment of the children's charac-ters.2.He full marks, but he was so careless as to make a spelling mistake. A. must have gained B. might gain C. could have gained D. must gain3. The ...
If a tornado isimminent,it may be accompanied by the following signs, provided by theNOAA Storm Prediction Center: Strong, persistent rotation in the cloud base. Whirling dust or debris on the ground under a cloud base — tornadoes sometimeshave no funnel!
What if you’re caught in a tornado without strong shelter? What can you do to shelter from a tornado if you live in a mobile home, are stuck in a vehicle, or out in the field? Your two best options are to shelter in a vehicle or a ditch. ...
and the whole bike rattled and squeaked, threatening to collapse into a pile of rusty parts. The tornado, however, was still going strong when I skidded to a halt in our driveway. So I transferred pedal power into painting power. I ...