Each year {#blank#}1{#/blank#}(thousand) of tourists visit the polar regions of the Arctic and Antarctica. But the increasing number of people traveling to the ends of the Earth can have {#blank#}2{#/blank#}negative effect on fragile ecosystems. Should tourists {#blank#}3{#/blank#}(allow) to visit polar regions?

    About 40,000 tourists visit Antarctica each year. More than five million travel to the Arctic and sub-Arctic. Transporting tourists to the regions {#blank#}4{#/blank#}(increase) ship and airplane traffic, adding to the risk of pollution, oil spills, and other {#blank#}5{#/blank#}(environment) damage. Because the places where wildlife is accessible {#blank#}6{#/blank#}(be) few in number, tourist traffic can become concentrated in specific areas, {#blank#}7{#/blank#} (put)Arctic vegetation at risk.

    Others say that access {#blank#}8{#/blank#}these very special parts of the world should not be restricted to only researchers and scientists. Polar tourism allows people to develop deep  {#blank#}9{#/blank#}（person） connections with polar regions. “Those {#blank#}10{#/blank#}travel to the Arctic or Antarctica often become cheerleaders for supporting those places.” Jim Sano, vice president for travel and conservation at World Wildlife Fund, told TFK.

Wayward Penguin(企鹅)Released South of New Zealand

    He needed a little push before speeding backward down a slide. Once in the water, he held his head up for one last look. And then he was gone. The wayward emperor penguin {#blank#}1{#/blank#} (know) as “Happy Feet” was back home in Antarctic waters after a temporary stay in New Zealand.

    Happy Feet was released into the ocean south of New Zealand on Sunday, more than two months after he came ashore on a beach nearly 2,000 miles from home and became an instant celebrity. {#blank#}2{#/blank#} (speak) from a satellite phone, Wellington Zoo veterinarian Lisa Argilla said Happy Feet's release went remarkably smoothly. Argilla said crew members from the boat carried the penguin inside his box to the rear part of the ship for his final send-off.

    {#blank#}3{#/blank#} when they opened the door of the box, the penguin showed no interest in leaving.

    “I needed to give him a little tap on his back,” Argilla said.

    The penguin slipped down the slide on his stomach, bottom first, she said. He resurfaced about 6 feet from the boat, {#blank#}4{#/blank#} (take) a look up at the people aboard, and then disappeared beneath the surface.

    “I was really happy to see him go,” Argilla said. “The best part of my job is when you get to release animals back into the wild {#blank#}5{#/blank#} they are supposed to be.”

    The 3-foot-tall bird was found on June 20 on Peka Peka Beach, about 40 miles northwest of New Zealand's capital, Wellington. It has been 44 years {#blank#}6{#/blank#} an emperor penguin was last spotted in the wild in New Zealand.

    At first, conservation authorities said they would wait and let nature take its course with the penguin. But it soon became clear the bird's condition was growing {#blank#}7{#/blank#} (bad), as he swallowed sand and, likely mistaking it for snow.

    {#blank#}8{#/blank#} the world watching, authorities finally took action, moving the penguin to the Wellington Zoo four days after he was discovered. It was at the zoo {#blank#}9{#/blank#} the bird was given a home in a room filled with a bed of ice so he wouldn't overheat.

    Now that Happy Feet {#blank#}10{#/blank#} (nurse) back to health, his chances are as good as they are for any other penguin in the wild.

    “He swam away, not caring about us anymore,” Argilla said.

She paused.

    “And that is a good thing,” she said.

    Every year, butterfly(蝴蝶) lovers in California go out in November to count monarch butterflies. They {#blank#}1{#/blank#}(get) a worrying result from their fall monarch count in 2018—{#blank#}2{#/blank#} number of monarchs had dropped by 86% since 2017.

The orange and black monarch butterflies are famous {#blank#}3{#/blank#} their long migrations(迁徙)—they fly thousands of miles every year. In the spring and summer they fly north; in the fall they fly south again.

    Monarchs, like most butterflies, are {#blank#}4{#/blank#}(terrible) important for plants. They help create more plants by spreading pollen(花粉) between plants. In turn, monarchs depend on plants for food. And they depend completely on a plant called milkweed {#blank#}5{#/blank#}(lay) their eggs.

    But monarchs have been facing growing problems for years. As more and more wild land has been turned into large farms, the monarchs have had trouble {#blank#}6{#/blank#}(find) enough milkweed. Many farms also use chemicals {#blank#}7{#/blank#} will kill insects in order to protect their plants. These chemicals also affect monarchs. Besides, pollution has made milkweed less {#blank#}8{#/blank#}(health) for the monarchs than it used to be.

    Scientists say monarchs will be in danger of dying out in the next 20 years if nothing {#blank#}9{#/blank#}(do) to save them.

   {#blank#}10{#/blank#}(thing) that people can do to help include planting milkweed, controlling the use of chemicals, protecting wild areas, and planting trees.

    Chinese President Xi Jinping has praised a group of middle school students for their efforts in satellite design. He said he was pleased with their curiosity and bravery in {#blank#}1{#/blank#} (science) exploration. The president also wished the teachers and students in Bayi School {#blank#}2{#/blank#} happy new year.

    Xi made the praise in a letter {#blank#}3{#/blank#} (write) to the students in Beijing's Bayi School on Saturday. A small satellite designed and developed by them {#blank#}4{#/blank#} (send) into space last Wednesday at Taiyuan Satellite Launch (发射) Center {#blank#}5{#/blank#} it was designed to operate in orbit (轨道) for 180 days.

    Three months ago, Xi returned to his high school, to visit a laboratory and talk to teachers and students {#blank#}6{#/blank#} were designing the small satellite. The president said he was {#blank#}7{#/blank#} (extreme) glad to know that the satellite designed by the students would be launched and called on them to become {#blank#}8{#/blank#} (build) of the country. Xi warmly encouraged the students {#blank#}9{#/blank#} (study) science and contribute to the development of China. He hoped that the students would keep hungry for knowledge and develop {#blank#}10{#/blank#} (they) national spirit.