1 . He only lived 35 years and he ___________(作曲) more than 600 pieces of music.

2 . Mozart showed genius even at the age of six, when he began to c________ music. (根据首字母单词拼写)

3 . 是谁谱写了那动人的曲调？（Who was it that…?）
___________________________________________________________________

4 . By the time he was 14, Mozart _________________ many pieces for the harpsichord , piano and violin, _________________ for orchestras.
莫扎特到14岁的时候，不仅已经谱写了很多管弦乐曲，还谱写了许多大键琴曲，钢琴曲和小提琴曲。

5 . 那位音乐家利用业余时间作诗。
The musician spent her spare time __________ poetry.

6 . 过了很久，他才创作出那样美妙的音乐。（It）（汉译英）

7 . Directions: Fill in each blank with a proper word chosen from the box. Each word can be used only once. Note that there is one word more than you need.

A. consisted 　B. composing 　C. measures　 D. account　 E. patterns　 F. limitations G. moderately　 H. progressed　 I. distribution　 J. significantly　 K. complement

AI can distinguish between bots and humans based on Twitter activity

Artificial intelligence is being used to spot the difference between human users and fake accounts on Twitter.

Emilio Ferrara at the University of Southern California in the US, and his colleagues have trained an AI to detect bots on Twitter based on differences in     1     of activity between real and fake accounts.

The team analysed two separate datasets of Twitter users, which had been classified either manually or by a pre-existing algorithm as either bot or human.

The manually verified dataset     2     of 8.4 million tweets from 3500 human accounts, and 3.4 million tweets from 5000 bots.

The researchers found that human users replied four to five times more often to other tweets than bots did. Real users gradually become more interactive, with the fraction of replies increasing over the course of an hour-long session of Twitter use.

The length of tweets by human users also decreased as sessions     3    . “The amount of information that is exchanged diminishes,” says Ferrara. He believes that the change may result from a cognitive depletion over time, in which people become less likely to expend mental effort    4     original content.

Bots, on the other hand, show no changes in their interactivity or the length of information they tweet over time.

The team also analysed the amount of time between any two consecutive (连读的) tweets from a single user. When this     5     is plotted, bots showed spikes for certain time gaps, such as tweeting at 30-minute or 60-minute intervals.

The team then combined these     6     to train an existing bot-detection algorithm, called Botometer, on the difference in activity patterns. The AI was     7     more likely to accurately detect to fake accounts than when it was not taking into     8     the timing of posts.

The algorithm could be used to     9     other bot-detection tools that analyse the language within posts, says Ferrara.

One of the study’s     10     is that the Twitter data the team analysed is from three years ago. In that time, it’s possible that bots have become more human-like in their activity patterns.

8 . Mozart _________ his last opera shortly before his death.

A．conducted

B．composed

C．complex

D．completed

9 . The   new plan________ three parts，each of which is very important.

A．composes of

B．is composed of

C．makes up

D．makes up of

10 .
1. Heavy homework loads and increasing screen time on smart phones ________ worsening nearsightedness among urban students.
2. The two leaders from Korea agree that they don’t allow any other country to ________ their internal affairs.
3. The scene of the magnificent waterfall moved him to ________ a poem.
4. People involved in it think it’s a nightmare, but I’m sure things will ________ as planned.
5. When taking care of their children, parents offer the children the necessary security and _______they receive love and trust they desire.
6. The American government is at a loss to know how to ________ the problem of mass immigration.
7. President Xi together with foreign guests toured the exhibition hall to ________ the opening ceremony of the CIIE(进博会).
8. The surgeon is now engaged in operating on a patient who needs emergency surgery to ________ a blood clot(凝块) from his brain.