12．
A new product-the Apple Watch-into the market．Last year，the watch was firstly introduced by Tim Cook，Apple's CEO．The price of the watch is from 349to1，099，depending on its size and whether it is a sports or regular one．
Apple engineers and designers have put in a lot of thought and hard work into creating this"small screen"on your wrist（手腕）．The"sensor（傳感器）"on the screen not only finds your finger，but also knows the difference between when you are tapping（輕觸），and when you are pressing harder．
The watch also has"haptic feedback（觸覺反饋）"．You can send personal messages to your friend-such as drawing a star or a special sign with your fingers，or tapping the watch，say 3times，and your friend will receive those taps on their wrist．
Besides telling the time，the watch will use'Bluetooth'to connect with your iPhone and show calls or text messages that come in．
According to Tim Cook，the watch may open up a whole new area of applications（應用） that we had never thought of．Some car factories like BMW have developed an app that allows its car owners to open their cars with the watch．A'Hotels'app may allow you to open the door to your hotel room without worrying about losing the smart-card．And finally，even at the airport-passengers may be able to simply wave their wrist to check into their flight．
The biggest use of the watch，however，is as your personal fitness coach．The watch can show your pulse （heartbeat） using a sensor at the bottom of the watch．It also has the same sensor as your iPhone，so it knows when you are moving，and also how much you are walking or running．It will remind you if you have been sitting for too long without taking exercise．
44．We can learn from the passage that the Apple WatchD．
A．is designed by Tim Cook
B．was brought into the market last week
C．sells at different prices for different colors
D．can show your pulse and knows when you are moving．
45．With apple watch，you canD．
A．develop your own personal app
B．connect your iPhone with your iPad
C．receive personal messages from your friends'iPhone
D．send personal messages to your friends'apple watches
46．Many businesses help push for the uses of apple watch EXCEPTA．
A．hospitals B．hotels C．airlines D．car factories．
