What will the world be like if cars can drive themselves? Imagine seeing an empty car passing by on its way to pick up its owner or a car full of passengers who are reading, listening to music or even sleeping. The passengers in the car needn't worry about the road ahead.

    Well, all of this could be the future of driving. There are several companies, including Google, Tesla, Mercedes-Bens, Audi, BMW, Volvo and Toyota, working on driverless cars. They are now in the testing stages (阶段). If the tests are successful, these self-driving cars could be available very soon. But how is it possible for a car to drive itself?

    Modern cars are able to take the place of drivers during certain situations. For example, they can park themselves or slow down when they detect (发现) objects nearby. They can also control the speed if there are dangerous condi-tions, such as snowy roads. Scientists and engineers believe that, with the help of wireless signals (无线),cameras and GPS, creating a safe self-driving car might be possible in ten to twenty years.

    Self-driving cars may help cut down the number of serious accidents caused by careless drivers or dangerous condi-tions. However, there are still some people who do not like the idea. American lawyer, White Drake, for example, doesn't believe these cars are safe. He thinks the possibility of the technology making a mistake will be too high.

    Climbing Mount Qomolangma, the World's highest mountain, has now become more difficult. The government of Nepal asks climbers to come down the mountain with at least 18 pounds of garbage. That's the average amount of garbage a climber leaves behind on Mount Qomolangma.

    Climbers would leave garbage along the way. This helps climbers keep their bags light, so they would have energy to reach the summit.  The garbage problem in Mount Qomolangma is not new. In 2013, climbers carried down a total of four tons of garbage.

    The new rule came into effect in April of 2014. To make sure it is followed, climbers will have to hand in some money to the officials before they climb the mountain. When they climb back down the mountain, the officials will check them to make sure they bring down the 18 pounds of garbage. If they do, their money will be given back to them.  If not, climbers won't get their money back. Also, the officials won't let these people climb the mountain again.

任务一：从方框中选择合适的小标题与以下三条建议相匹配。

任务二：根据Tip2，从左图选择2项与其在野餐篮中相应的位置匹配。

How to Pack for the Picnic

Picnics are a fun way to enjoy time with your family or friends outside! If you want to go on one，planning ahead will help a lot. Choose a location and then decide what kind of food you want. Pack everything you need in a basket and cooler，and you're ready to head off on your adventure. But how can we pack for the picnic？Here are some tips. 

Tip 1：{#blank#}1{#/blank#} Whenever you're outside，you're going to run into bugs （虫子）. Pus（紧紧地） to keep the bugs out and the food in. 

Tip 2：{#blank#}2{#/blank#} Put food at the bottom （底部）. Place the tablecloth （桌布） or blanket at the very top so you can pull it out first to put on the ground or picnic table. 

Tip 3：{#blank#}3{#/blank#} If it's going to be cold，pack jackets，scarves；don't forget hats and bug spray. In either situation，always carry a bottle of sunscreen. 

{#blank#}4{#/blank#} {#blank#}5{#/blank#}

 Four students are in the classroom. They are Anna, Tom, Mike and Mary. Their jackets are on the teacher's desk. The jackets are brown, white, red, and blue. But we don't know whose they are. We know the boys' jackets aren't red and the girls' jackets aren't brown. What color is Mary's jacket? We don't know. But we know it's not blue. Tom says, "My jacket is white. " Do you know what color their jackets are?