1 . Leah Brown aged 36 fell several hundred feet from Oregon’s highest mountain right before the eyes of a group of volunteer rescue workers who rushed to her aid and helped save her life.

The woman was coming down a popular path (小路) on Mt. Hood, about 70 miles east of Portland, on Saturday morning, according to the local police. Mt. Hood is the highest in Oregon, standing at around11.240 feet.

The fall was seen by members of Portland Mountain Rescue (PMR), a volunteer organization focused on helping people in mountainous areas. The group called 911 and rushed to the woman, providing medical care. They helped keep the woman warm for seven hours as the police worked to get her off the mountain safely. Finally, the woman was evacuated (转移) to a parking lot at 9:30 pm and taken to a hospital.

The climber, Leah Brown, said she didn’t know what caused her fall. “I can only guess it was either an ice tool or a crampon (冰爪) that didn’t land and stick like it should have, so I became detached from the mountain,” Brown said. “The thing I’d like to most stress is my appreciation for the members of PMR who evacuated me and took good care of me the whole time,” Brown added. “They saved my life. ”

In a statement after the rescue, PMR warned of the dangerous winter conditions at the mountain. “The short days and lower temperatures mean that the snow tends to be very hard and icy, and the conditions tend to be much steeper. Climbing the mountain in icy conditions is much more difficult,” the group said.

1. What happened to Brown on Saturday morning?

A．She lost her way in a forest.	B．She hurt her eye unexpectedly.
C．She failed to call her family.	D．She fell down on a downhill path.

2. What does the underlined word “detached” in paragraph 4 mean?

A．Different.

B．Hidden.

C．Separated.

D．Tired.

3. How did Brown feel about the members of PMR?

A．Thankful.

B．Regretful.

C．Surprised.

D．Concerned.

4. What did PMR intend to tell us?

A．Climbing requires teamwork.	B．Climbing in winter is too risky.
C．We must remain positive in hard times.	D．We can admire the view on sunny days.

2 . Earlier this month, TikTok announced that it will be introducing screen time limits for the accounts of users aged under 18. Children under 13 will require a parent or guardian to type in a password to continue scrolling (滚屏) through their feed, and those aged 13-17 will be asked to set their own passwords when the viewing time goes beyond the limit.

Studies suggest that 30 minutes may be the sweet spot for social media use, where users are able to stay connected with friends and family and view entertainment. However, many other studies show that overly-heavy social media use can lead to a lot of problems, such as physical issues and depression.

By suggesting 100 minutes as a hard line where a password is required to be created by the user, TikTok is gradually making the standards clear as to what may be regarded as problematic social media habit in young people. Although these passwords for older teenagers can obviously be bypassed, they are a step in the right direction in encouraging children to use social media responsibly.

Also, parents who own their own TikTok accounts will be able to link with their children’s accounts, gaining additional, such as muting notifications (消息免打扰) and customizing time limits for different days in the week.

Algorithms (算法) that could tell parents if the child has been viewing dangerous material could soon be put into use. However, the difficulty in this is the amount of content available on the internet.

Ultimately, apps such as TikTok and Instagram will need to continue introducing more measures to improve online safety for children.

Lawmakers around the world are paying close attention to the effect social media has on the young, meaning that the development of new tools to improve its use will no doubt take place soon if big tech wishes to avoid additional legal issues.

1. Why did TikTok introduce screen time limits for teenagers?

A．To protect their privacy.

B．To develop their self-control.

C．To improve family relationship.

D．To prevent overuse of social media.

2. What’s the author’s attitude towards TikTok’s new policy?

A．Favourable.

B．Objective.

C．Concerned.

D．Disapproving.

3. What can parents do to help children use social media responsibly?

A．Type in a password to stop the use.

B．Send a link to the children’s account.

C．Set time limits through their own account.

D．Use algorithms to remove dangerous content.

4. What does the last paragraph mainly talk about concerning social media?

A．Its effects on the young.	B．Legal pressure on its improvement.
C．Its application to lawmaking.	D．Solutions to its technological issues.