更多"Experiments have to be made under(c"的相关试题:
[单项选择]Airplanes have made()
A. easy and comfortable for us to travel
B. us to travel easily and comfortably
C. it easy and comfortable for us to travel
D. themselves easy and comfortable for us to travel
[填空题]These artists______(把一生都献给了艺术), and made great contributions to the artistic field.
[单项选择]Physicists have made new discoveries that challenge our()theories of the universe.
A. existed
B. adapted
C. accepted
D. established
[填空题]Some companies have made their dark chocolate less ______.
[填空题]Advances in medical technology have made it possible for people (live)______ longer.
[简答题]Recent developments in astronomy have made is possible to detect planets in our own Milky Way and in other galaxies. This is a major achievement because, in relative terms, planets are very small and do not emit light. Finding planets is proving hard enough, but finding life on Earth will prove infinitely more difficult. The first question to answer is whether a planet can actually support life. In our own solar system, for example, Venus is far too hot and Mars is far too cold to support life. Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve. Whether a planet can support life depends on the size and brightness of its star, that is its "sun". Imagine a star up to twenty times larger, brighter and hotter than our own sun. A planet would have to be a very long way from it to be capable of supporting life.
[单项选择]In Australia the Asians have made their influence ______in businesses, large and small.
A. feeling
B. feel
C. felt
D. to be felt
[填空题]A word of encouragement might have made me respect rather than (hate) ______ him.
[单项选择]Private cars have made the traffic problems ( )
A. the worse than before
B. worse than ever before
C. more bad as before
D. more bad than it was
[填空题]You should have made more improvements in your work if you had been more (confidence)()
[简答题]Suppose you have made an appointment with your friend at 5 pm, but you have some urgent business to attend to and have to cancel your appointment. Write a note to your friend:
1) explaining why you have to cancel your appointment
2) making an apology for that
3) telling him/her how you plan to make up for it
You should write approximately 100 words. Do not sign your own name at the end of your note.
Use "Wang Lin" instead.
[单项选择]Biologists have made a lot of progress in understanding ageing. They have not, however, been able to do much about slowing it down. A piece of work reported in this week’s Nature by Darren Baker, though, describes an extraordinary result that points to a way the process might be improved. Dr Baker has shown— in mice, at least—that ageing body cells not only suffer themselves, but also have adverse effects on otherwise healthy cells around them. If such ageing cells are selectively destroyed, these adverse effects go away.
The story starts with an observation that senescent cells often produce a molecule called P16INK4A. Dr Baker genetically engineered a group of mice that were already quite unusual. They had a condition called progeria, meaning that they aged much more rapidly than normal mice. The extra tweak he added to the DNA of these mice was a way of killing cells that produce P16INK4A. He did this by inserting into the animals’ DNA, near the gene for P 16INK4A, a second gen
A. biologists have achieved a lot in delaying ageing.
B. Darren Baker has found a way to slow ageing down.
C. Darren Baker study shows the harm of ageing cells.
D. eliminating ageing cells will prevent human body from ageing.
[简答题]Computers and Internet have made it possible for office workers to do much of their work from home instead of working in offices every day. So some suggest working from home should be encouraged as it is good for workers and employers. What is your opinion Write a composition of about 200 words on the following topic:
My View on Working from Home
You are to write in three parts.
In the first part, state specifically what your opinion is.
In the second part, support your opinion with appropriate details.
In the last part, bring what you have written to a natural conclusion or a summary.
Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the instructions may result in a loss of marks.