Filmgoers should be told how many calories there are in the popcorn, ice cream and soft drinks that they buy in cinemas, according to the Food Standard Agency.

    Smaller popcorn buckets and drink cups should also be made{#blank#}1{#/blank#} , the nutrition inspector said.

    Tim Smith, chief executive of the agency, told The Times that cinemas should help to deal with the country's overweight {#blank#}2{#/blank#}.

    "There is a misbelief that popcorn is calorie-free, but that is not the case. It is a {#blank#}3{#/blank#}to us," he said. "Portion sizes are also a big issue, and there seems to be increasingly big packs on sale."

    He spoke as a number of food chains such as Pret A Manger, Wimpey and The Real Greek{#blank#}4{#/blank#}to put calorie counts on all their menus.

    A trial scheme（试行方案） with 21 food companies took place last summer, and {#blank#}5{#/blank#}are that consumers altered their buying habits when they realised the number of calories in a product.

    A consultation(征询意见) on the trial ends next month but Mr Smith is already planning the second drive for American-style calorie counts and is {#blank#}6{#/blank#} to win support from cinemas and other entertainment places, from football grounds to concert halls.

    Government{#blank#}7{#/blank#}suggest that two thirds of adults and a third of children are overweight. If trends are not {#blank#}8{#/blank#}, this could rise to almost nine in ten adults and two thirds of children by 2050, putting them at {#blank#}9{#/blank#} risk of heart disease, cancer and other diseases.

    The brain is a seemingly endless library, whose shelves house our most precious memories. To allow new memories to form, old information is sometimes pushed out of the brain.

    Previous studies have shown that learning new information can lead to {#blank#}1{#/blank#}. But in a new study, researchers showed for the first time how this effect {#blank#}2{#/blank#} in the brain.

    In daily life, forgetting actually has clear {#blank#}3{#/blank#}. Imagine, for instance, that you lost your bank card. The new card you receive will come with a new personal identification number (PIN). Each time you remember the new PIN, you gradually forget the old one. This process improves access to {#blank#}4{#/blank#} information, without old memories interfering.

    And most of us may sometimes feel {#blank#}5{#/blank#} when old memories interfere with new, relevant memories. Consider trying to remember where you parked your car in the same car park you were at a week earlier. This type of memory is particularly interfering.

    When we get new information, the brain automatically tries to combine it with existing information by {#blank#}6{#/blank#} associations. And when we retrieve（检索）information, both the desired and {#blank#}7{#/blank#} but irrelevant information is recalled.

    The majority of previous research has focused on how we learn and remember new information. But current studies are beginning to put greater {#blank#}8{#/blank#} on the conditions under which we forget, as its importance begins to be more appreciated.

    A very small number of people are able to remember almost every detail of their life. Though it may sound like an advantage to many, people with this rare condition often find their {#blank#}9{#/blank#} ability troublesome. In a sense, normal forgetting may help to ensure our brain doesn't become too full.