2022-2023学年英语周报高二课标外研第57期答案汇总

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There are advantages and disadvantages with emails. If you send someone an email , then he will receive it extremely quickly. Normal postal services are rather slow as far as speed of delivery is concerned .

However, if you write something by email , which you might later regret , and send it immediately , there is no chance for second thoughts . At last , if you are posting a letter you have to address and seal(封) the envelope and take it to the post box. There is plenty of time to change your mind . The message is thought before your email ! 

Most people think of racing when they see greyhounds(灰狗) and believe they need lots of exercises. They can actually be quite lazy! Greyhounds are good at fast races but not long-distance running . They do need regular exercise but they like to run for a short burst and then get back on the bed of a comfortable seat. Another misunderstanding is that greyhounds must be aggressive(好斗的) because they are big in size. In fact, greyhounds love people and are gentle with children.

Greyhounds can live for 12-14 years but usually only race for two or three years , and after that they make great pets. They don’t eat a lot for their size.

Normally , greyhounds can be as tall as 90 cm. There is , however, a small-sized greyhounds , which stands only 33 cm. Greyhounds come in a variety of colors . Grey and yellowish-brown are the most common . Others include black, white, blue , red and brown or a mix of these. 

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来源： https://www.cnblogs.com/gaokaos/p/16133722.html