1）获取最新新闻；减少纸的使用； 2）存在虚假信息；易误导大众；3）建议

Dear Tom,

I'm writing to tell you the Internet news has both advantages and disadvantages.

With the help of the Internet, we can use our mobile phones or other devices to look through the Internet news and get the latest information in a short time. In addition, by reading the Internet news, we can reduce the use of paper, which is beneficial to the environment. However, the Internet news is also flooded with false information, which misleads people easily. With all of that information, the critical thinking skill is necessary so that you won't be tricked.

Looking forward to your early reply.                                             

Yours,

                                                                               Li Hua

Mountain climbing has appealed many people. With more and more mountain climbing(sight) developed, people are getting more chances to experience this exciting sport.

Those who aren't brave enough to climb a mountain but still want to get a similar experience can go for the man-made rock climbing wall. While mountain climbing is more difficult and dangerous and needs(great) concentration, the man-made rock climbing wall is less dangerous as the person just needs to climb a cliff(悬崖) is not so high as a mountain.

Climbing the man-made rock wall doesn't need much skill and can (do) with the help of a coach even if you don't have any knowledge about the sport. However, those (plan) to go for mountain climbing must have information about how this sport is carried out, though they needn't learn the knowledge of mountain climbing(thorough).

It is also important(make) sure that you are fit to participate in this sport. is suggested that you speak to someone with the first-hand experience of mountain climbing before planning to take up the sport.

I have tried climbing the man-made rock wall with incredible (brave) and the experience is very good. I would also like to try mountain climbing and I need to get enough courage for it first.