语法填空
Do you like travelling? Staying ____ (health) while ____ (travel) can help to ensure your trip is a happy and enjoyable one. ____ you are travelling abroad, here are the tips you need to make your trip much ____ (easy):
Make sure you have got signed passport(护照) and visas. Also, before you go, fill in the emergency information page of your passport! Make two copies of your passport identification page. This will help a lot if your passport ____ (steal). Leave one copy at home with friends or relatives. Carry the other ____ you in a separate place from your passport.
Read the Public Announcements or Travel Warnings for the countries you plan to visit. Get yourself familiar with local laws and customs of the countries to ____ you are travelling.
Leave a copy of your itinerary(旅行日程) with family or friends at home so that you can be contacted in case of an emergency.
Do not accept packages from strangers. Do not carry too much money or ____ (necessary) credit cards. If we make enough____ (prepare), we will succeed. Have ____ good time!
的图像上所有的点向右平行移动
个单位长度，再把所得各点的横坐标伸长到原来的2倍（纵坐标不变），所得图像的函数解析式是 （ ）