It's always been a dream for Alex to take a trip with her mother, but it was a death in the family that1made them both realize how precious life really is.

    “After losing my grandma, I2that neither I nor my mum will3be here, and that I can't4the right time to come,” the 27-year-old girl told The Huffington post.

    “After a week of5, my amazing mum and I are off to travel around the United States. We will be travelling from New York to Los Angeles interviewing6who are changing the world for the better and7the dream I had for a very long time: to travel together with my mother. I have taken a month off work and we are on our way.8are waiting!” Alex said.

    So in August，Alex and her 63-year-old retired mother，Halina, traveled to the United States for a three-week 9that took them from coast to coast.

    Alex is the10of Looking For Heroes, a social media project, in which she photographs many of the interesting people she meets with,11unique tidbits (花边新闻) of their life stories at the same time. The 12mother and daughter traveled across the nation, visiting cities13Knoxville, Tennessee, New York City, Los Angeles and Washington. Along the way they took photos 14 famous backdrops (背景) in each city, making some15memories.

    Meanwhile, Alex16much from her mother. Her mother often said “My  17to young people would be to learn new things, and what you have learned will be your biggest 18in life. With age you stop19about things that don't matter. With your priorities (优先) changing, 20and health become the most important.

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大雨过后蚯蚓钻出地面的原因是（　　）

读“某地等高线地形图”，下列判断正确的是（　　）