Every year，the brightest young scientists from around the globe come together to participate in the world's largest pre-college science competition，the Intel International Science and Engineering Fair（ISEF）.They demonstrate their knowledge of science and engineering to improve the way we work and live.
   One of 2019's winners，Katie Lu，found a method for removing oil from water.This concept can also be applied to the removal of microplastics from our oceans as well.
   Here is what Katie told reporters：
   My experience at the Intel ISEF was amazing！I remember on judging day，walking the exhibit hall and looking at the people gathered outside waiting to get in.My teacher turned to me and said，"That's the future right there."It was so amazing to spend time with all of these participants who are going to do amazing things in the future.
   My scientific career has taught me not to fear failure and not to be afraid to ask for help.It's really easy to be overwhelmed（擊敗）and wonder if what you're doing is going to work out，but even if it doesn't work out，it's OK!Always look on the positive side！A failure now doesn't mean you're a failure forever.Failure makes success feel earned when it comes.Also，asking for help is good when you're struggling.You learn how to do things a lot faster and more efficiently.
   I'm shocked that some people are still skeptical about climate change.It is real，it is dangerous and it is one of the most important issues of our generation.Reducing carbon emissions isn't a "should"；it is a "must" to continue living on the planet.Additionally，people aren't really worried about their personal impact on the earth in terms of littering，overusing plastic or wasting resources.If we don't curb harmful human activity before it's too late，it will be a problem that affects all humans，not just those that contribute.

（1）What seems to concern Katie most？

C

C

A．Ocean exploration.
B．The overpopulation on the earth.
C．Environmental problems.
D．The shortage of natural energy.
（2）What can we learn from what Katie's teacher said？

C

C

A．No Intel ISEF，no future.
B．All the talents are at the Intel ISEF.
C．The participants will make the future.
D．Katie should try to do better than the other participants.
（3）What does Paragraph 5 mainly tell us？

D

D

A．The setbacks Katie experienced in her science.
B．The relationship between failure and success.
C．Seeking help is a shortcut to doing things well.
D．What Katie has gained from her scientific career.
（4）What does the underlined word "curb" in the last paragraph most probably mean？

B

B

A．Punish.
B．Control.
C．Deny.
D．Measure.