Which of the following doesn’t belong to the Four Great inventions of Ancient China?

Our planet is about         years old.

       can cause high blood pressure and hearing problems.

       is one of the greatest scientists, who won the Nobel Prize for physics.

       is the largest freshwater lake in China.

       is the Chinese tradional holiday.

Six-year-old Brandon decided to make pancakes for his parents. He should first take the flour(面粉), so he   46  the cupboard and pulled out the heavy flour bag. He put some flour   47  the bowl with his hands, mixed in a cup of milk and added some sugar.

Soon Brandon was  48  flour and getting frustrated, He wanted this to be   49  for Mum and Dad, but it was getting very bad. He didn't know what to do   50 .

Suddenly he saw his cat near the bowl and went to push it away, but he   51  the egg box to the floor. He tried to   52  but slipped(滑倒) on the eggs, getting his clothes   53 . Just then, he saw his dad standing at the door.

Brandon's eyes were full of tears. He was   54  his dad would beat him, but his father didn't.   55 , he picked up his crying son and kissed him.

That's what we sometimes face in   56 . We try to do something good, but it turns into a mess. Sometimes we just   57  there in tears because we can't think of anything else to do. Hopefully, that's   58  someone close to us picks us up, loves us and forgives us. But we can't    59  trying to "make pancakes" for "Dad" or for others. Sooner or later we'll get it   60 , and then they'll be glad we tried.

The teacher slapped         .

—Must I come back before supper, mum?

—No, you       .

—When did you buy this computer? It looks so new.

—I         it for only a couple of days. My sister bought it for me as a birthday present.