一．写出下列动词的过去时和过去分词。
动词原形
过去时
过去分词
make
cut
get
say
二．写出5个前缀是un-的单词，并写出中文含义。
英文单词
中文含义
三．选择题。
1._______ a strong man! A. How    B. What
2.选出例句中划线单词的词性。
A. 形容词adj        B. 动词v.        C. 名词 n.
词性
例句
Use cold water to wash colored clothes.
It is her turn to color the picture.
Purple is my sister’s favourite color.
He used a sharp knife to cut sushi.
Mars Rovers have many uses.
3.这个图书馆由学生和老师一起使用。________
A.This library uses by students and teachers.
B.This library is used by students and teachers.
四．翻译。
1.Iput on weight easily.
2.As long as there are enough data from the area of our eyes, the cameras can recognize us.
3.科学家们正在努力解决这个问题。(solve the probem）
4.我的作业丢了。（lost）
5.你应该知道自己的弱点。（weakness）
6.我们不应该指出他的错误。（point out）
三． 听力练习
Facial-recognition _________are everywhere – _______ in your smartphone. Many people _______ this technology to unlock their phones, open doors, or make _______payments. But ________the pandemic, there is a problem: everyone wears masks. What a hassle!Scientists are trying to solve this problem. ___________, Engineering & Technology (E&T) magazine reports that Hanwang, a tech company in
Beijing, _________ a new system. It can recognize 95 _________of people when they wear masks.

What’s the secret? It’s all about your eyes.

Marios Savvides from Carnegie Mellon University, US, studies ____________________. As we get older, he says, our faces change __________. But the area around our eyes doesn’t. It _______ the same – even if we put on weight. As long as there are _________ data from the area of our eyes, the cameras can recognize us.

Tech5 is ___________ facial-recognition company. The Swiss company’s productthe shape of your face. It also scans your iris, which is the ___________ part of your eyes. Tech5 hopes to ignore all of the face _________ the nose.

This _________________ software is _________ important ______ just unlocking your phone. “It can detect crime suspects and terrorists [even when they wear masks],” said Huang Lei from Hanwang. Hanwang’s technology is used by ________________________ in places like subway stations and airports (机场). Similar technology is used by the United States Air Force.

Huang pointed out one big weakness: it fails when people wear both a mask and sunglasses. “In this situation, all of the __________ facial information is lost,” Lei said to E&T.
答案：
一．写出下列动词的过去时和过去分词。
动词原形
过去时
过去分词
make
made
made
cut
cut
cut
get
got
gotten
say
said
said
二．写出5个前缀是un-的单词，并写出中文含义。
英文单词
unhappy
unsafe
unclock
untidy
unfold
中文含义
不开学
不安全
解锁
不整洁
weight是什么词性打开
三．选择题。
4._______ a strong man! A. How    B. What
5.选出例句中划线单词的词性。
A. 形容词adj        B. 动词v.        C. 名词 n.
词性
例句
A
Use cold water to wash colored clothes.
B
It is her turn to color the picture.
C
Purple is my sister’s favourite color.
He used a sharp knife to cut sushi.
Mars Rovers have many uses.
6.这个图书馆由学生和老师一起使用。________
A.This library uses by students and teachers.
B.This library is used by students and teachers.
四．翻译。
1.Iput on weight easily.
我很容易长胖。
2.As long as there are enough data from the area of our eyes, the cameras can recognize us.
只要有我们眼部周围足够的数据，相机就能认出我们。
3.科学家们正在努力解决这个问题。(solve the probem）
Scientists are trying to solve the problem.
4.我的作业丢了。（lost）
My homework is lost.
5.你应该知道自己的弱点。（weakness）
You should know your weakness.
6.我们不应该指出他的错误。（point out）
We should not point out his mistake.
三． 听力练习
Facial-recognition (人脸识别) cameras are everywhere – even in your smartphone. Many people use this technology to unlock (解锁) their phones, open doors, or make quick payments. But during the pandemic (大流行), there is a problem: everyone wears masks. What a hassle (麻烦)!Scientists are trying to solve this problem. For example, Engineering & Technology (E&T) magazine reports that Hanwang, a tech company in Beijing, has made
a new system (系统). It can recognize 95 percent of people when they wear masks.

What’s the secret (秘密)? It’s all about your eyes.

Marios Savvides from Carnegie Mellon University, US, studies facial recognition. As we get older, he says, our faces change shape. But the area around our eyes doesn’t. It stays the same – even if we put on weight (体重). As long as there are enough data from the area of our eyes, the cameras can recognize us.

Tech5 is another facial-recognition company. The Swiss company’s product scans (扫描) the shape of your face. It also scans your iris (虹膜), which is the colored part of your eyes. Tech5 hopes to ignore (忽略) all of the face below the nose.

This kind of software is more important than just unlocking your phone. “It can detect crime suspects (寻犯罪嫌疑人) and terrorists [even when they wear masks],” said Huang Lei fr
om Hanwang. Hanwang’s technology is used by Chinese police in places like subway stations and airports (机场). Similar technology is used by the United States Air Force.

Huang pointed out one big weakness (不足): it fails when people wear both a mask and sunglasses. “In this situation, all of the key facial (面部的) information is lost,” Lei said to E&T.

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