英语听力短文23 Don't Let the Bedbugs Bite

Do you sleep alone? Or do you just think you sleep alone? Maybe your bed is not just your bed. Bedbugs are taking over the USA. The little pests are about the size of an apple seed. Many big cities have them. The Big Apple has them. They are in hotels. They are in theaters. They are in department stores. They are in apartment buildings. Their favorite place in an apartment is the bedroom. Their favorite place in a bedroom is the mattress. At night they crawl out of the mattress. They suck blood out of whoever is sleeping on "their" mattress. Many victims have red bite marks on their skin the next day. The red marks are ugly. Worse, they usually itch like crazy. Researchers are trying to develop a magic chemical that will kill only bedbugs. Meanwhile, people need to keep their eyes open—especially while they're asleep!