The invention of the mobile phone has undoubtedly revolutionized the way people communicate and inuenced every aspect of our lives. The issue is whether this technological innovation has (1)______ more harm than good. In order to answer the question, we must rst turn to the types of consumers. Presumably, most parents (2)_____ are always worrying about their children’s safety buy mobile phones for them to track their whereabouts. We can also assume that most teenagers want mobile phones to avoid missing out on social contact. In this context, the advantages are clear. (3)______ , we cannot deny the fact that text messages have been used by bullies to intimidate fellow students. There is also (4)_____ evidence that texting has affected literacy skills. The widespread use of mobile phone has, out of question, affected adult consumers too. What employee, on the way home from work, would be reluctant to answer a call from their boss? Apparently, only 18% of us, according to a survey, are willing to switch off our mobile phones once we've left the ofce. Admittedly, mobile phones can be intrusive but there are obvious benets to possessing one. Personally speaking, they are invaluable when it comes to making social or business arrangements at short (5)______ . They also provide their owners with a sense of security in emergency situations.

NOISE POLLUTION
Noise is more than a mere nuisance. At certain levels and durations of exposure, it can cause physical damage to the eardrum, and (1)_____ in emporary or permanent hearing loss. In addition to causing hearing loss, (2)_____ noise exposure can also (3)______ blood pressure and pulse rate, cause irritability, anxiety, and mental fatigue, and interfere with sleep, recreation, and personal communication. Noise pollution control is, (4)______ , of importance in the workplace and in the community. Noise effects can be (5)_____ by a number of techniques, for example, increasing the distance or blocking the path between the noise source and the recipient, reducing noise level at the source, and protecting recipients with earplugs or earmuffs

The word Scuba is actually an acronym for self-contained underwater breathing apparatus. Scuba diving is an excellent way to see some very beautiful sites: coral diving sites with their colorful sea life are the most famous but other scuba diving (3) include shipwrecks and caverns.

The central mission of a library is to collect, organize, preserve, and provide access to knowledge and information. In fulfilling this mission, libraries preserve a valuable record of culture that can be passed down to (2)______ generations.

Scuba diving is a sport in (1) you swim underwater for extended (2) using special equipment.

The United States has many different types of families. (1)_____ most American families are traditional, consisting of a father, a mother and one or more children, 22 percent of all American families in 1998 were headed by one parent, usually a woman. In a few families in the United States, there are no children. These (2)_____ couples may believe that they would not make good parents; they may want freedom from responsibilities of childbearing; or, perhaps they are not (3)_____ able to have children. Other families in the United States have one adult who is a stepparent. A stepmother or stepfather is a person who joins a family by marrying a father or a mother. Americans (4)_____ and accept these different types of families. In the United States people have right to privacy and Americans do not believe in telling other Americans (5)_____ type of family group they must belong to. They respect each other’s choices regarding family groups. Families are very important to Americans.

Library is a collection of books and other informational materials made available to people for reading, study, or reference. The word library comes from liber, the Latin word for “book”. (1)_____, library collections have almost always contained a variety of materials. Contemporary libraries maintain collections that include not only printed materials such as manuscripts, books, newspapers, and magazines, but also audio-visual and online databases. In addition to maintaining collections within library buildings, modern libraries often feature telecommunications links that provide users with access to information at remote sites.
The central mission of a library is to collect, organize, preserve, and provide access to knowledge and information. In fulfilling this mission, libraries preserve a valuable record of culture that can be passed down to (2)______ generations. Libraries are an essential link in this communication between the past, present, and future. Whether the cultural record is contained in books or in electronic formats, libraries ensure (3)_______ the record is preserved and made available for later use. People use library resources to gain information about personal interests or to obtain recreational materials such as films and novels. Students use libraries to supplement and enhance their classroom experiences, to learn (4)______ in locating sources of information, and to develop good reading and study habits. Public officials use libraries to research legislation and public policy issues. One of the most valued of all cultural institutions, the library (5)_______ information and services that are essential to learning and progress

Noise effects can be (5)_____ by a number of techniques, for example, increasing the distance or blocking the path between the noise source and the recipient, reducing noise level at the source, and protecting recipients with earplugs or earmuffs