8.The house was very quiet， ()as it was on the side of a mountain.

10.Being a pop star can be quite a hard life， with a lot of travelling ()heavy schedules.

A. 　with regard to

B. 　as to

C. 　in relation to

D. 　owing to

35.This shirt is much smarter than()you were wearing yesterday.

A. 　one

B. 　the one

C. 　which

D. 　that

49.They had to put ()the meeting due to the ongoing COVID-19.

A. 　forward

B. 　up

C. 　down

D. 　off

22.His scientific discoveries have been as important as ()of Sir Isaac Newton.

A. 　ones

B. 　that

C. 　those

D. 　these

3. Passage Twenty-SevenOut of all the students who enroll in a massive open online course (MOOC)， only about 5 percent complete the course and receive a certificate of accomplishment.This statistic is often cited as evidence that MOOCs are fatally flawed (有缺陷的)and offer little educational value to most students.Yet more than 80 percent of students who fill out a post-course survey say they met their primary objective.How do we look at these two facts? We’re used to focusing on completion rates in higher education， but they’re not the only—or even the most meaningful—indicator of engagement in open online courses.With no cost to enroll， no punishment for dropping out， and little reward for actually earning a certificate， MOOCs are fundamentally different from traditional classes—and students use them in fundamentally different ways.Data from more than 1.8 million students enrolled in 36 MOOCs offered by the University of Pennsylvania show that students treat MOOCs like a buffet (自助餐)， sampling the material according to their interests and career goals.Some are curious about the subject matter and just watch one or two video lectures; others use the discussion forums to connect with their intellectual peers around the world.Of all enrolled students， nearly 60 percent watch at least one video， complete at least one assignment， or post at least once in a forum.So focusing on the tiny fraction of students who complete a MOOC is misguided.The more important number is the 60 percent engagement rate.Students may not finish a MOOC with a certificate of accomplishment， but the courses nonetheless meet the educational goals of millions.According to Para.3， students choose MOOCs for the following reasons EXCEPT ().

15.I＇ve never been to Beijing， but it＇s the place ().

A. 　where I＇d like to visit

B. 　I most want to visit

C. 　in which I＇d like to visit

D. 　that I want to visit it most

35.You don’t have to pay for your flights: they’re ()in the price of your holiday.

A. 　concluded

B. 　held

C. 　settled

D. 　included

43.The government should come up with a better solution to the problems caused by the high price of petrol.

1.In previous times， when fresh meat was in short ()， pigeons were kept by many households as a source of food.

A. 　store

B. 　provision

C. 　reserve

D. 　supply

1. Passage Twenty-OneWhat will man be like in the future—in 5，000 or even 50，000 years from now? We can only make guesses， of course， but we can be sure that he will be different from what he is today.For man is slowly changing all the time.Let us take an obvious example.Man， even five hundred years ago， was shorter than he is today.Now， on average， men are about three inches taller.Five hundred years is relatively short period of time， so we may assume that man will continue to grow taller.Again， in the modern world we use our brains a great deal.Even so， we still make use of only about 20% of the brain’s capacity.As time goes on， however， we shall have to use our brains more and more， and eventually we shall need larger ones.This is likely to bring about a physical change to the head， in particular the forehead will grow larger.Nowadays our eyes are in constant use.In fact， we use them so much that very often they become weaker and we have to wear glasses.But over very long period of time it is likely that man’s eyes will grow stronger.On the other hand， we tend to make less use of our arms and legs.These， as a result， are likely to grow weaker.At the same time， however， our fingers will grow more sensitive because they are used a great deal in modern life.But what about hair? It will probably disappear from the body altogether in course of time because it does not serve a useful purpose any longer.In the future， then， both sexes are likely to be bald.Perhaps all this gives the impression that future man will not be a very attractive creature to look at.This may well be true.All the same， in spite of all these changes， future man will still have a lot in common with us.He will still be a human being， with thoughts and emotions similar to our own.The passage tells us about ().