There are lots of insects that farmers hate. But there also are some they like. They protect crops against damage from other insects. A good example is the lady beetle, which is also known as the ladybug(瓢虫)．
Lady beetles are a natural control for aphids(蚜虫). Lady beetles are red, orange or black. They often have black spots, though some have light colored spots. Different kinds of lady beetles have different numbers of spots. There are lady beetles with four, five, seven and fourteen spots.
Many of the well-known kinds of lady beetles come from Asia or Europe. They now are common throughout the United States.
American scientists imported one kind of lady beetle, the multicolored Asian lady beetle, as early as 1916. They released them as an attempt to control some kinds of insects. Over the years, the beetle has become established, possibly helped by some that arrived with imported plants on ships.
Experts say over 450 kinds of lady beetles are found in North America. Some are native to the area. Others have been brought from other places. Almost all are helpful to farmers.
The Asian lady beetles now in the United States probably came from Japan. The Asian lady beetle eats aphids that damage crops like soybeans, fruits and berries.
In the southern United States, Asian lady beetles have reduced the need for farmers to use reskilling poisons on pecan trees. This popular tree nut suffers from aphids and other pests that the lady beetles eat.
But some people say the Asian lady beetle has itself become a pest. They worry that the lady beetles may eat their late autumn fruit crops.
Experts say Asian lady beetles may appear in large numbers in some years. But they say the insects are too helpful to be considered as pests.
When you are travelling in Thailand, which means of transport is the best choice?
You can rent a variety of motorbikes or bikes in Thailand. It seems to be very popular in most of the beaches and islands along the places in the north. The most popular bikes are the little 125 cc Honda Dream which you can get for about 150 baht (铢) a day or as little as 3,000 baht per month, making it the cheapest way to tour Thailand for the people from other countries.
Sometimes you will have to go somewhere by taxi. When you are in cities in Thailand, especially in Bangkok, always remember to get a taxi that is traveling on the roads. Some drivers outside hotels refuse to use the meter(计程表). They will ask a price which is several times the price when they use the meter!
The quality of the roads in Thailand is generally pretty good, so renting cars is another way to get around. The big car rental companies may offer you slightly older cars at a very reasonable(合理的) price. It is a little surprising considering that the cost of buying a car in Thailand is more than that in the West. Petrol is also reasonably priced in Thailand, more expensive than American prices, but much cheaper than what is paid in Europe. In the past, Bangkok could be a difficult place to drive in—signs were generally in Thai only, making it a hard job to find exactly where you were by looking around. But now, the situation is improved. In a lot of places, even the farthest corners of the country, street signs are in both Thai and English.
→We must have a to keep healthy.
→Having watched TV for too long, I it.
增加：在缺漏词的地方加一个漏字符号，并在其下写出该词。
删除：把多余的词用斜线划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1). 每处错误及其修改均仅限一词。
2). 只允许修改10处，多者（从第11处起）不记分。
Dear Mandy,
I'm not doing well in my lessons at school, especial in maths. My dad says I must try hard because he wants me go to university. He thinks I'm lazy, but it's not true. I work really hard, often study late into the night! I've tried to talk to my mother, but she always said I have to work as hard like my brother does. My brother doesn't study very hard, and he always gets excellent grades. It's not fair! The only thing I like it is art. My teacher says I'm the best student she's had for year. When I told my dad，all he said was, “You mustn't waste your time in art. You must focus your mind on your lessons!” I'm feeling quite puzzling as to what to do now. Would you please help me out?
Thanks a lot!
Yours,
Lisa
部分同学的饮食习惯 | 良好的饮食习惯 | 个人看法 |
不吃早餐 爱吃零食 偏食 饮食过度 | 饮食多样化 饮食定时定量 | 重要性；有助于身体健康 |
注意：
1). 发言稿必须包括所有内容要点，可适当发挥；
2). 发言稿开头和结尾已为你写好，不计入总词数；
3). 词数100左右；
4). 参考词汇：偏食：be particular about food；零食：snack。
Dear friends,
As we all know, we are what we eat. Therefore, it's very important for us to form healthy eating habits.
That's all. Thank you!
