Choose the best answer and complete the passage.（选择最恰当的选项完成短文）Welcome to the Science Museum. My name is Mrs. White and I will be you guide today. If you have any questions at any time, please don't be afraid to 1 .The more you ask, the more you learn.
Let me tell you about the museum before I take you around. There are 2 floors in all, you can learn a lot of new things on each floor.You all have3 of the building so you shouldn't get lost.
On the first floor, where we are now, you will be able to see a lot of interesting science experiments. You can try them all yourselves. We will spend an hour here.
Then we will go to the second floor. There you will see the IT floor -- how computers work, as well as mobile phones and that kind of things. On the same floor you can see the history of the car. We have some very 4 and very new cars for you to see.
On the next floor you will learn about5 travel. You will see a copy of the rocket（火箭）that took the astronaut into the moon. On the same floor you can follow the history of the airplane.
On the top floor, we will look at how the human body 6 . All in all, you will benefit a lot from this visit.
So, if you follow me, we'll begin.
