1.      You can send and receive e-mails from a _________. A. charger                           B. printer                        C. smartphone               D. USB 2.   With modern________for the home, doing housework is no longer a burden for housewives A. inventing                       B. inventions                 C. invented                    D. inventors 3.   We can surf the_________to search for news, watch films, or download music. A. e-book                            B. Internet                      C. laptop                        D. smartphone 4.   A washing machine or vacuum cleaner can help you to _________ time and energy while doing housework. A. kill                                  B. save                            C. spend                         D. waste 5.   Teenagers nowadays often have their own idols who they really love and _______ in different ways. A. imitate                            B. observe                      C. inspire                       D. help 6.   People often use the natural world as inspiration to design and invent___________. A. producers                      B. produces                   C. productions              D. products 7.   Thomas Edison, Benjamin Franklin, James Watt are among of the greatest_________of all time. A. inventions                     B. inventiveness           C. inventors                   D. invents 8.   Smartphones are used not only for communication but also for information and _________. A. entertain                        B. entertainer                C. entertaining              D. entertainment 9.   It is definitely true that nature has inspired __________inventions and technologies. A. numbers                         B. numeral                     C. numerical                  D. numerous 10.             The ________, which can travel underwater, is very useful for scientists to learn about the undersea world. A. aeroplane                       B. electronic car            C. spaceship                  D. submarine 11.             It is convenient for you to read _________when you travel. A. e-books                          B. laptops                       C. online game              D. smartphones 12. If you get a laptop as a reward, what will you use it________? A. by                                    B. for                              C. to                                D. with 13. Internet helps us interact____________ people all around the world. A. on                                    B. in                                C. with                            D. of 14. Many students prefer _________ assignments on their laptops to writing traditionally. A.                                         reading                            B. searching                   C. sending           D. typing 15. Mobile devices such as laptops or digital cameras can be charged by ________. A.                                         solar charges                  B. solar-charges            C. solar chargers D. solar-chargers