亲脂性较强，易通过血脑屏障的药物是（） A．卡莫司汀 B．氟尿嘧啶 C．环磷酰胺 D

癌与肉瘤最本质区别是（）

A.肿瘤细胞分布方式不同

B.组织来源不同

C.肿瘤内血管数量不同

D.转移途径不同

E.发生年龄不同

甲股份有限公司（以下简称甲公司）为增值税一般纳税企业，适用的增值税税率为17%，所得税税率为25%，该公司2013年度发生下列经济业务

：

（1）1月1日，甲公司采用支付手续费方式委托乙公司代销商品200件，每件成本为10万元，合同约定以每件15万元的价格对外销售，甲公司按售价金额的10%向乙公司支付手续费。1月31日乙公司完成代销活动，甲公司收到乙公司开具的代销清单，甲公司于当天开具了增值税专用发票。

（2）3月5日，向丙公司出售商品一批，并开出增值税专用发票，发票金额注明销售价款为50万元，增值税税额为8.5万元，该批商品成本为30万元，为了及时收回货款，合同规定甲公司给予乙公司现金折扣，现金折扣条件如下：2/10,1/20，n/30，计算现金折扣时考虑增值税，乙公司3月14日支付货款。

（3）6月1日，甲公司与丁公司签订一项设备安装合同。合同约定该设备安装总价款150万元（不含增值税），于设备安装完成并验收合格后一次结清，甲企业在年末确定本年提供的劳务收入。2013年12月31日，甲公司发生的实际成本为50万元，预计还需要发生50万元的成本。甲公司按已提供劳务占应提供劳务总量的比例确认提供劳务交易的完工程度。

（4）甲公司在11月20日销售材料一批，增值税专用发票上注明售价20万元（不含增值税），该批材料实际成本15万元，款项已收到，并存入银行。

要求：

根据上述资料，不考虑其他因素，分析回答（1）-（5）小题。（答案中的金额单位用万元表示）

根据资料（1）-（4），甲公司2013年确认的营业收入是（）万元。

A.3000

B.3050

C.3125

D.3145

Our body clock，or natural body rhythm，influences our energy and alertness．Paying attention to it can help us choose the suitable time of day when we best perform specific tasks．

The reality，however，is that most of us organize their time around work demands，school deadlines，commuting or social events．Doing whatever your body feels like doing is a luxury in today's fast-paced modem society．

But that doesn't mean it isn't worth trying．Obeying our body clock has significant health benefits．Disrupting our natural body rhythm，on the other hand，has been linked to problems such as depression，obesity，or headache，says Steve Key，a biology professor．

When the body clock can synchronize（使……同步）the rhythms of its natural processes，it “gives us an advantage in daily life”，says Key．

According to him，when it comes to cognitive（认知的）work，most adults perform best in the late morning．As our body temperature starts to rise just before awakening in the morning and continues to increase until midday，our memory，alertness and concentration gradually improve．

However，he adds，our ability to concentrate typically starts to decrease soon thereafter．Most of us are more easily distracted（分心）between noon and 4 pm．

Alertness also tends to fall after eating a meal and sleepiness tends to peak around 2 pm，making that a good time for a nap．

Surprisingly, tiredness may increase our creative powers．For most adults，problems that require open ended thinking are often best dealt with in the evening when they are tired， according to a study in the journal Thinking & Reasoning．

When choosing a time of day to exercise，paying attention to your body clock can improve results．Physical performance is usually best from about 3 to 6 pm，says Michael Smolensky，a professor of biomedical engineering．

Of course, not everyone's body clock is the same，making it even harder to synchronize natural rhythms with daily plans．

小题1:If we know our natural body rhythm well, we can         ．

A．find out the suitable time to do specific tasks

B．organize our time around work demands

C．do whatever our body feels like doing

D．be sure to be healthy小题2:Which of the following is NOT true?

A．Our alertness is influenced by our natural body rhythm

B．Doing whatever your body feels like is very difficult in our modem society．

C．Obeying our body clock is good for our health．

D．Disrupting our natural body rhythm can lead to obesity．小题3:According to Steve Key，which of the following is NOT true?

A．When our body clock synchronizes the rhythms of its natural processes，we can do better．

B．When it comes to cognitive（认知的）work，most people perform best in the late morning．

C．As body temperature rises before awakening in the morning，our concentration gradually improves．

D．We concentrate better in the late morning than between noon and 4 pm．小题4:Inspiration（灵感）to solve a difficult problem will most probably come to us     ．

A．when we get up in the morning

B．when we are tired in the evening

C．when we are full of energy in the late morning

D．when we are asleep at night小题5:Which of the following can be the suitable title for the passage?

A．What is natural body rhythm?

B．Natural body rhythm is good for us．

C．Something about natural body rhythm．

D．The latest research about natural body rhythm．

某一年付息一次的债券票面额为1000元，票面利率10%，必要收益率为12%，期限为5年，如果按复利贴现，其内在价值为( )。

A．926.40元
B．993.47元
C．927.90元
D．998.52元

微软公司的Project软件属于( )。

A．财务软件

B．项目管理软件

C．系统软件

D．电子邮件软件