For a long time, bats     1     (be) one of the most fearful creatures in the animal kingdom. Many pop culture associations with them are     2     (relate) to vampires(吸血鬼).   Though these associations are complete misunderstandings, bats do have a dark side as a     3    (danger) disease vector(介体). So there is good reason to be exceptionally cautious if you come into contact with bats. However, the fact is     4     bats play a significant role in keeping a balanced ecosystem.

Many organic farmers have learned about the benefits of     5     (have) bats nearby to help manage the amount of pests that show up without pesticides. One brown bat --- about     6    size of a human thumb----- can consume about 600 mosquitoes and other unwanted insects within an hour. They make for a fantastic, almost essential     7    (add) to pest management on any farm.

Even large government organizations have realized the economic benefits of bats. The United States Geological Survey estimates that bats’ contributions     8     pest management save the country     9    (rough) 3.7 billion dollars per year. Without them, we would likely experience a dramatic drop in food production, which would eventually make     10     (it) way into our weekly grocery bills.

Access to information     1     (have) exploded in recent years through at least two main developments: rapid technological advancements and institutional innovations (制度创新). The first have generally come from the private sector (领域) while     2     latter have tended to come from the public sector. Both promise     3     (increase) the spread of information, including in relatively less-connected rural areas. In doing so, they help change not only rural livelihoods,     4     rural governance itself.

Recent technological innovations, like mobile phones and the Internet, are becoming     5     (wide)available both in developing countries and rural areas Worldwide, mobile phone subscriptions (认购) increased to one per person     6     average in 2018. It was a quick climb,     7     (compare) with other sectors. While low-income countries unsurprisingly have lower levels of adoption, they still have about 60 mobile phone subscriptions per 100 individuals. The average individual in a low income country is likely to have a mobile phone subscription. Further, people who cannot afford their own mobile phones often have occasional access to the mobile phones of other     8     (person). Low income countries     9     (see) growth rates in access to mobile phones over the last 20 years similar to the     10     (globe) average growth rate.

China is pretty much obsessed with QR Codes(二维码), which were responsible for $8 trillion worth     1     business deals last year. Businesses should look to China when it comes to     2    (understand) just how far QR Code usage can really go.

China had long realized the     3    (convenient) of using QR Codes as a method of payment. WeChat is without doubt the top App in China, especially considering that 93% of     4     population there use it. This App includes a function     5    (name) WeChat Wallet, and people in China usually pay through the QR Codes which     6    (produce) through WeChat Wallet,     7     needs to be connected with users’ bank accounts and then they can start spending immediately.

Almost all vendors get payments through QR Codes. They are being used for bike- renting, grocery shopping, hotel reservation     8     many other things.

QR Codes are     9    (simple) so popular that some people even use them     10    (collect) donations!

With the development of modern technology, people can stay     1     (connect) with their families and friends easily, however far apart they are from each other. WeChat is one of     2     most frequently used means of communication in China. It is reported that the number of the WeChat users     3     (reach) over 1.1 billion so far.

Once     4     (join) the WeChat, people can find more and more people start to add them as friends. They don’t have to consider time     5     (zone) when communicating. Another reason why it becomes so popular is that it costs nothing. It’s also very convenient for people to     6     (immediate) update what they are doing by WeChat.

However, addiction to WeChat will rob people of the time that should otherwise be spent     7     something more important. And the many so-called friends on it are not really friends at all,     8     simply want to put ads or sell items on Moments. Besides, people on the Wechat are more likely     9     (compare) themselves with others, which will make them feel bad when finding some people seem to be     10     (success).