附加题。
Do you want to learn cooking? Let me tell you some cooking tips.
◆Wash vegetables before peeling or cutting them.
◆Peel vegetables as thinly as you can.
◆Put potatoes in water after cutting them, so the color will not change.
◆If you boil vegetables in water, do not throw (扔) the water away and 1 .
◆After peeling onions, put them in water for about 10 minutes. So 2 .
◆Heat the oil thoroughly (彻底地) before adding vegetables.
◆Put tomatoes in boiling water. Leave it for about 5 minutes. So 3 .
◆After boiling noodles, 4 to separate (分开) them each.
◆When you cook chicken or meat, 5 and then lower (降低) the heat.
◆Don't add salt to meat before you cook it.
◆Frozen (冷冻的) meat is much easier to cut or slice.
将下列句子或词组还原到文中相应的位置, 使短文完整、通顺。
A. you can peel the tomatoes easily
B. put them in cold water at once
C. keep it to make other food
D. you should first cook over high heat
E. you'll not "cry" when cutting
根据短文内容, 判断正(T) 误(F) 。
( )6. We should wash vegetables before peeling or cutting them.
( )7. If we don't put potatoes in water after cutting them, they will be bad for our health.
( )8. We should heat the oil thoroughly before adding vegetables to it.
( )9. Frozen meat is more difficult to cut.
( )10. Beef is not mentioned in the passage.
，则粒子在电场中的运动时间为
，由题可知两电荷在电场中运动的时间相等；沿电场方向有
，
，可得
，因m未知则两电荷的电荷量可能相等；正确
可知，两电荷在电场中运动的加速度不相等；错误
，得
，因m未知动能大小无法判断；错误